Human Papillomavirus (HPV) Infection and Risk Behavior in Vaccinated and Non-Vaccinated Paraguayan Young Women.

Cervical cancer is a global health concern and ranks fourth among the most prevalent cancers in women worldwide. Human papillomavirus (HPV) infection is a known precursor of cervical cancer and preventive measures include prophylactic vaccines. This study focused on sexually active Paraguayan women aged 18-25 years, exploring the intersection of HPV vaccination and sexual behavior. Among 254 participants, 40.9% received the Gardasil-4 vaccine, with no significant differences in sexual behavior between the vaccinated and unvaccinated sexually active groups. However, a notable decrease in the prevalence of HPV among the vaccinated women highlights the efficacy of this vaccine in reducing infections. The prevalence of any HPV type was 37.5% in vaccinated participants compared to 56.7% in unvaccinated participants (p = 0.0026). High-risk HPV types showed a significant difference, with a prevalence of 26.0% in vaccinated women compared with 52.7% in unvaccinated women (p < 0.001). Although a potential decline in genital warts was observed among the vaccinated individuals, statistical significance (p = 0.0564) was not reached. Despite the challenges in achieving high vaccination coverage, the observed reduction in HPV prevalence underscores the importance of ongoing monitoring, healthcare professional recommendations, and comprehensive risk management. These findings contribute to dispelling concerns about HPV vaccination influencing sexual behavior, advocating further large-scale research to explore the impact of vaccines on various HPV types and potential cross-protection.

Frecuencia y características de la encefalopatia hipertensiva secundaria a glomerulonefritis posinfecciosa en pacientes internados en un hospital de referencia nacional

Introducción: La glomerulonefritis aguda pos infecciosa (GNPI) puede cursar con complicaciones como la encefalopatía hipertensiva en 7-11% de los casos. Objetivo : determinar la frecuencia y características de la encefalopatía hipertensiva (EH) secundaria a GNPI en pacientes internados en el Departamento de Pediatría del Hospital Nacional en el periodo enero/2000-diciembre/2018. Materiales y Métodos : Estudio observacional, descriptivo, retrospectivo de pacientes con síndrome nefrítico (SN) con C3 disminuido y normalización a los tres meses, con hipertensión arterial (HTA) severa acompañada de manifestaciones neurológicas (cefalea, náuseas, vómitos, alteración de conciencia, convulsiones), que cedieron al regularizarse la HTA. Se estudiaron las características sociodemográficas (edad, sexo, procedencia, escolaridad de los padres, número de hijos) y clínicas (edema periférico, edema agudo de pulmón, hematuria, y manifestaciones neurológicas). Los datos fueron analizados utilizando estadística descriptiva mediante EPIINFO (CDC, Atlanta), expresando las variables cuantitativas como mediana y rango intercuartílico (RIC) y las cualitativas como frecuencia absoluta y porcentual. Resultados: 27 /160 (16,8%) pacientes, desarrollaron EH. La edad varió entre 3 a 16 años (mediana: 10 años; RIC: 5); el antecedente infeccioso más frecuente fue piodermitis (40,7%), seguido de faringitis aguda (37%). Todos los pacientes presentaron edema periférico y cefalea intensa. La duración de la HTA tuvo una mediana de 5 días (RIC: 4) y los días de internación una mediana de 7 (RIC: 6). Ningún paciente requirió diálisis ni quedó con secuelas, no se registraron óbitos. Conclusión: en pacientes con EH debe considerarse el diagnóstico de GNPI, investigando antecedentes infecciosos y valorando adecuadamente la volemia.

Introduction: Acute post-infectious glomerulonephritis (APGN) can present with complications such as hypertensive encephalopathy in 7-11% of cases. Objective: to determine the frequency and characteristics of hypertensive encephalopathy (HE) secondary to APGN in patients admitted to the Department of Pediatrics of the National Hospital from January/2000 to December/2018. Materials and Methods: This was an observational, descriptive and retrospective study of patients with nephritic syndrome (NS) with decreased C3 and normalization at three months, with severe arterial hypertension (AHT) accompanied by neurological manifestations (headache, nausea, vomiting, altered consciousness, seizures), which subsided when the AHT was controlled. Sociodemographic (age, sex, place of residence, parental education level, number of children in home) and clinical (peripheral edema, acute pulmonary edema, hematuria, and neurological manifestations) characteristics were studied. The data were analyzed using descriptive statistics through EPI INFO (CDC, Atlanta), expressing the quantitative variables as median and interquartile range (IQR) and the qualitative ones as absolute frequency and percentage. Results: 27/160 (16.8%) patients developed HE. Age ranged from 3 to 16 years (median: 10 years; IQR: 5); the most frequent infectious history was pyodermitis (40.7%), followed by acute pharyngitis (37%). All patients presented peripheral edema and severe headache. The duration of AHT had a median of 5 days (IQR: 4) and the days of hospitalization a median of 7 (IQR: 6). No patient required dialysis or was left with sequelae, no deaths were recorded. Conclusion: in patients with HE, the diagnosis of APGN should be considered, a history of infections obtained and adequately assessing fluid status.

Severity of influenza illness by seasonal influenza vaccination status among hospitalised patients in four South American countries, 2013-19: a surveillance-based cohort study.

BACKGROUND: Although several studies have reported attenuated influenza illness following influenza vaccination, results have been inconsistent and have focused predominantly on adults in the USA. This study aimed to evaluate the severity of influenza illness by vaccination status in a broad range of influenza vaccine target groups across multiple South American countries. METHODS: We analysed data from four South American countries (Argentina, Brazil, Chile, and Paraguay) participating in REVELAC-i, a multicentre, test-negative design, vaccine effectiveness network including 41 sentinel hospitals. Individuals hospitalised at one of these centres with severe acute respiratory infection were tested for influenza by real-time RT-PCR, and were included in the analysis if they had complete information about their vaccination status and outcomes of their hospital stay. We used multivariable logistic regression weighted by inverse probability of vaccination and adjusted for antiviral use, duration of illness before admission, and calendar week, to calculate the adjusted odds ratios (aORs) of intensive care unit (ICU) admission and in-hospital death (and combinations of these outcomes) among influenza-positive patients by vaccination status for three target groups: young children (aged 6-24 months), adults (aged 18-64 years) with pre-existing health conditions, and older adults (aged ≥65 years). Survival curves were used to compare length of hospital stay by vaccination status in each target group. FINDINGS: 2747 patients hospitalised with PCR-confirmed influenza virus infection between Jan 1, 2013, and Dec 8, 2019, were included in the study: 649 children (70 [10·8%] fully vaccinated, 193 [29·7%] partially vaccinated) of whom 87 (13·4%) were admitted to ICU and 12 (1·8%) died in hospital; 520 adults with pre-existing medical conditions (118 [22·7%] vaccinated), of whom 139 (26·7%) were admitted to ICU and 55 (10·6%) died in hospital; and 1578 older adults (609 [38·6%] vaccinated), of whom 271 (17·2%) were admitted to ICU and 220 (13·9%) died in hospital. We observed earlier discharge among partially vaccinated children (adjusted hazard ratio 1·14 [95% CI 1·01-1·29]), fully vaccinated children (1·24 [1·04-1·47]), and vaccinated adults with pre-existing medical conditions (1·78 [1·18-2·69]) compared with their unvaccinated counterparts, but not among vaccinated older adults (0·82 [0·65-1·04]). Compared with unvaccinated individuals, lower odds of ICU admission were found for partially vaccinated children (aOR 0·64 [95% CI 0·44-0·92]) and fully vaccinated children (0·52 [0·28-0·98]), but not for adults with pre-existing conditions (1·25 [0·93-1·67]) or older adults (0·88 [0·72-1·08]). Lower odds of in-hospital death (0·62 [0·50-0·78]) were found in vaccinated versus unvaccinated older adults, with or without ICU admission, but did not differ significantly in partially vaccinated (1·35 [0·57-3·20]) or fully vaccinated young children (0·88 [0·16-4·82]) or adults with pre-existing medical conditions (1·09 [0·73-1·63]) compared with the respective unvaccinated patient groups. INTERPRETATION: Influenza vaccination was associated with illness attenuation among those hospitalised with influenza, although results differed by vaccine target group. These findings might suggest that attenuation of disease severity might be specific to certain target groups, seasons, or settings. FUNDING: US Centers for Disease Control and Prevention. TRANSLATIONS: For the Spanish and Portuguese translations of the abstract see Supplementary Materials section.

Risk Factors for Death and Severe Neurological Sequelae in Childhood Bacterial Meningitis.

INTRODUCTION: Acute bacterial meningitis (ABM) continues to be a challenge from a diagnostic and therapeutic point of view. Identifying severity risk factors and predictive scores may guide interventions to reduce poor outcome. METHODS: Data from a retrospective study for ABM in children admitted to the Institute of Tropical Medicine in Paraguay was analyzed. ABM was defined as positive cerebrospinal fluid culture, positive latex agglutination, or identification of microorganism by real time-polymerase chain reaction. Univariate and multivariate analyses of risk factors at hospital admission that predicted major morbidity or death during hospitalization were performed. A point-based scoring system that included variables, which were clearly different among those who passed away, was constructed. RESULTS: One hundred fourteen children hospitalized with ABM were eligible for the study. The mean age was 46 ± 57 months (range, 1-192 months). The observed mortality was 33% (38/114 patients). When a point-based scoring system was used, for score of 0 (n = 29) and 1 (n = 12), no death was observed. Among patients with a score of 2 (n = 14), 3 (n = 10 patients), 4 (n = 12 patients), and 5 (n = 13 patients), the mortality rate was 14.3%, 40%, 50%, and 53.8%, respectively. When the score was 6 or higher, the mortality rate was at least 63.6%. CONCLUSIONS: The present score accurately discriminated the probability of death in children hospitalized with ABM, and it could be a useful tool to select candidates for admission to the intensive care unit and for adjunctive therapy in clinical trials.

Estudio aleatorizado, doble ciego, placebo controlado de doxiciclina en pacientes con dengue. Modulación de citoquinas y respuesta clínica

Resumen Introducción: Los niveles de citoquinas podrían ser determinantes en la severidad de la Fiebre Dengue. La supresión de su actividad con inmunomoduladores modificaría su evolución. Objetivo: Determinar el efecto de la adición de doxiciclina sobre el perfil de citocinas de pacientes con dengue y valorar la respuesta clínica y el impacto en la severidad de pacientes con Fiebre de Dengue. Materiales y métodos: Estudio aleatorio, doble ciego, placebo controlado con doxiciclina. Ambos grupos recibieron la medicación por 7 días y se controló la evolución clínica, laboratorio y niveles de citoquinas en los días 0, 3 y 7. Resultados: Fueron incluídos en el estudio 61 pacientes, 36 (59%) en el grupo placebo y 25 (41%) en el grupo doxiciclina. Se observó que los pacientes tratados con doxiciclina mostraron menor plaquetopenia en el día 0 y 3 [(170029±47483/mm3 vs 198875±52211/mm3)(p<0,05) y 129545±62840/mm3 vs 165048±51142/mm3)(p<0,05)] al compararlo con el grupo placebo. Los niveles de IL-6, TNF y raIL-1 no mostraron diferencias significativas. Se observó una tendencia a menores niveles de IL-1ß en el grupo tratado con doxiciclina (52,1±97 vs 3,3±7,7)(0,08). Conclusiones: No se constató diferencias en la presentación clínica, hospitalización ni en la mortalidad entre pacientes tratados con doxiciclina comparados con placebo. Hubo una tendencia a menores niveles de IL-1ß en los pacientes tratados con doxiciclina. Debe aumentarse el tamaño de la muestra para confirmar o rechazar los resultados.

Abstract Background: Cytokine levels could be determinant in the severity of Dengue Fever. The suppression of their activity with immunomodulators would modify its evolution. Objective: To determine the effect of doxycycline on the cytokine profile of patients with dengue fever and to assess the clinical response and the impact on the severity of patients with dengue fever. Materials and methods: Randomized, double-blind, placebo-controlled study with doxycycline. Both groups received the medication for 7 days and clinical evolution, laboratory and cytokine levels were monitored on days 0, 3 and 7. Results: 61 patients were included in the study, 36 (59%) in the placebo group and 25 (41%) in the doxycycline group. It was observed that patients treated with doxycycline showed lower thrombocytopenia at day 0 and 3 [(170029±47483/mm3 vs 198875±52211/mm3)(p<0.05) and 129545±62840/mm3 vs 165048±51142/mm3)(p<0.05)] when compared to the placebo group. IL-6, TNF and raIL-1 levels showed no significant differences. A trend to lower IL-1ß levels was observed in the doxycycline treated group (52.1±97 vs 3.3±7.7)(0.08). Conclusions: There was no difference in clinical presentation, hospitalization or mortality among patients treated with doxycycline compared to placebo. There was a trend to lower IL-1ß levels in patients treated with doxycycline. The sample size should be increased to confirm or reject the results.

COVID-19 y coberturas de vacunación del calendario regular del Paraguay, efecto de la pandemia

RESUMEN Introducción: La pandemia de COVID-19 produjo una crisis sanitaria afectando las coberturas de vacunación de los países. Objetivo : Describir la cobertura de vacunación de los biológicos trazadores durante el periodo prepandémico (2015- 2019) y pandémico (2020-2021) en Paraguay. Materiales y Métodos: Estudio descriptivo observacional de corte transverso, que comprendió a niños de 0 a 5 años de edad, de las 18 Regiones Sanitarias del País. Se analizaron las coberturas de vacunación del Programa Ampliado de Inmunización, periodo prepandémico (2015-2019) y pandémico (2020-201). Se incluyeron los biológicos trazadores: BCG, DPT1, DPT3, IPV1 y bOPV3, SPR1, SPR2 y vacuna antiamarílica (AA), el cálculo de cobertura de vacunación a nivel país se realizó por medio del análisis del reporte electrónico semanal de dosis de vacunas administradas por Región Sanitaria. Se estableció la comparación de las coberturas de vacunación por biológico trazador, por periodos y rango de edad. Resultados: Durante la pandemia se constató un descenso de cobertura de vacunación de los biológicos trazadores, para BCG: 4 % (2020), 15% (2021);DPT1: 5 % (2020), 13 % (2021); DPT3: 9 % (2020), 22 %(2021); IPV1: 5 % (2020),16 % (2021); bOPV3: 7% (2020),19 % (2021); SPR1: 9 %, SPR2: 13 % (2020),SPR1:17%, SPR2:16 % (2021) y AA: 7% (2020), 15% (2021). Conclusión: Durante la pandemia de Covid-19 disminuyeron las coberturas de vacunación de todos los biológicos trazadores, similar descenso se constató en otros países de América, existe el riesgo de aparición de brotes de enfermedades prevenibles por vacunación por el acúmulo de susceptibles.

ABSTRACT Introduction: The COVID-19 pandemic produced a health crisis affecting countries' vaccination coverage statistics. Objective: To describe the coverage of recommended vaccines during the pre-pandemic (2015-2019) and pandemic (2020-2021) periods in Paraguay. Materials and Methods: This was a descriptive, observational cross-sectional study, comprising children from 0 to 5 years of age, from the Country's 18 Health Regions. The vaccination coverage of the National Expanded Immunization Program, pre-pandemic (2015-2019) and pandemic (2020-201) periods were analyzed. The recommended vaccinations included were: BCG, DTP1, DTP3, IPV1 and bOPV3, MMR1, MMR2 and yellow fever vaccine (AA), the calculation of vaccination coverage at the country level was carried out through the analysis of the weekly electronic report of doses of vaccines administered by Health Region. The comparison of vaccination coverage by recommended vaccine was established, by periods and age range. Results: During the pandemic, a decrease in vaccination coverage of the recommended vaccines was observed, for BCG: 4% (2020), 15% (2021); DTP1: 5% (2020), 13% (2021); DTP3: 9% (2020), 22% (2021); IPV1: 5% (2020), 16% (2021); bOPV3: 7% (2020), 19% (2021); MMR1: 9%, MMR2: 13% (2020), MMR1: 17%, MMR2: 16% (2021) and AA: 7% (2020), 15% (2021). Conclusion: During the Covid-19 pandemic, vaccination coverage of all recommended vaccines decreased, a similar decrease was found in other countries in the Americas, there is a risk of outbreaks of vaccine-preventable diseases due to the accumulation of susceptible populations.

Latin American forum on immunization services during the COVID-19 pandemic.

Introduction: The Latin American Society of Pediatric Infectology (SLIPE for its acronym in Spanish) is working hard to contribute with strategic actions to prevent the recurrence of Vaccine-Preventable Diseases and to prevent the reduction of vaccine coverage in the region of the Americas.Areas covered: On Friday, September 25th, a Latin American forum of experts on immunization services during the COVID-19 pandemic was held through Webex platform. Issues such as: the imminent risk of occurrence and outbreaks of vaccine-preventable diseases, the importance of epidemiological surveillance and the vaccination campaign challenges, in the context of a pandemic were discussed.Expert opinion: Vaccination campaigns should no longer be postponed or delayed; instead, they must be reactivated; governments, scientific societies, and physicians must promote vaccination programs to avoid outbreaks of vaccine-preventable diseases. On the eve of a SARS-CoV-2 vaccine, it is necessary to insist on the availability of sufficient doses to avoid dose shortages in disadvantaged areas of the region.

Características clínicas y de laboratorio en pacientes pediátricos ambulatorios con Fiebre Dengue

RESUMEN Introducción: La fiebre dengue (FD) ha representado en nuestro país una de las causas más frecuentes de consulta en la última década. Objetivos: Describir las características clínicas y de laboratorio de los pacientes con dengue observados en la unidad de atención ambulatoria de un centro de referencia. Materiales y Métodos: Se incluyeron todos los casos de dengue en pacientes menores de 20 años asistidos en la unidad de consulta ambulatoria del Instituto de Medicina Tropical, en el período entre noviembre de 2015 y marzo 2016. En función a una base estructurada de colección de datos, se analizaron las características demográficas, clínicas y de laboratorio. Resultados: Se incluyeron 1491 casos de dengue. La edad media fue de 12±5 años, correspondiendo 58 casos (4%) al grupo etario 2-9 años y 995 (67%) al grupo >9 años (p9 años, constatándose en el 79%, 60% y 55% de los casos (p9 años) al compáralos con los menores de 2 años (p9 años. Se identificaron variables clínicas (exantema más frecuente en lactantes y algias en niños >9 años) y laboratoriales (citopenias poco frecuentes en lactantes) que dependen del grupo etario. La sensibilidad de la antigenemia ha sido excelente y similar en los grupos etarios.

ABSTRACT Introduction: Dengue fever (DF) represents one of the most frequent causes of consultation during the last decade in our country. Objectives: To describe the clinical and laboratory characteristics of dengue patients presenting to the ambulatory care unit of a pediatric reference center. Materials and Methods: We included all cases of dengue in patients under 20 years of age who presented to the outpatient consultation unit of the Institute of Tropical Medicine between November 2015 and March 2016. Based on a structured collection of data, we analyzed their demographic, clinical and laboratory characteristics. Results: 1491 cases of dengue were included. The mean age was 12 ± 5 years, 58 cases (4%) were in patients aged 2-9 years and 995 (67%) aged > 9 years (p 9 years old, reported in 79%, 60% and 55%, respectively, of cases (p 9 years) when compared with those under 2 years (p 9 years. Clinical variables (rashes in infants and algias in children > 9 years old) and laboratory variables (rare cytopenias in infants) were identified depending on the age group. The sensitivity of antigenemia testing was excellent and similar in all age groups.

Factores pronósticos de gravedad de las infecciones invasivas por Staphylococcus aureus adquiridas en la comunidad en niños / Prognostic factors of severity of invasive community acquired Staphylococcus aureus infections in children

Objetivo: Describir las características clínicas de las infecciones invasivas por Staphylococcus aureusen niños e identificar los factores pronósticos de gravedad y mortalidad.Materiales y métodos: Estudio observacional, en pacientes < 16 años hospitalizados en 2010-2015 por infecciones invasivas por S. aureus en el Instituto de Medicina Tropical, de Asunción, Paraguay. Los pacientes se distribuyeron según si habían requerido ingresar a la Unidad de Cuidados Intensivos o no, y se compararon variables clínicas, de laboratorio y evolutivas.Resultados: De los 107 pacientes incluidos, 50 (el 47 %) presentaron bacteremia; 50 (el 47 %), neumonía; y 21 (el 19 %), sepsis con focos múltiples. En los pacientes que ingresaron en la Unidad de Cuidados Intensivos (el 41 %), el uso previo de antibiótico (p < 0,05), la presencia de bacteremia (p = 0,01), de comorbilidad (p < 0,05) y la presentación con focos sépticos múltiples (p < 0,01) fueron más frecuentes. La mortalidad global fue del 15 %. Factores de riesgo asociados a mortalidad fueron, entre otros, la presencia, de hipotensión al ingresar (p < 0,01), focos sépticos múltiples (p < 0,01), bacteremia (p < 0,01), leucopenia (p < 0,01), anemia grave (p < 0,01) y acidosis metabólica (p < 0,01). Conclusiones: Los factores pronósticos de gravedad fueron el uso previo de antibióticos, la bacteremia, la presencia de comorbilidad y la presentación con focos sépticos múltiples. La mortalidad fue significativa; los factores de riesgo asociados fueron la presencia, al ingresar, de hipotensión, focos sépticos múltiples, leucopenia, anemia grave y acidosis metabólica

Objective: To describe the clinical characteristics of invasive Staphylococcus aureus infections in children and identify the prognostic factors of severity and mortality. Materials and methods: Observational study in patients < 16 years old hospitalized between 2010 and 2015 due to invasive S. aureus infections at the Instituto de Medicina Tropical, in Asunción, Paraguay. Patients were distributed based on whether or not they required admission to the intensive care unit, and clinical, laboratory, and evolutionary outcome measures were compared. Results: Out of the 107 included patients, 50 (47 %) developed bacteremia; 50 (47 %), pneumonia; and 21 (19 %), multifocal disease. Among the patients who were admitted to the intensive care unit (41 %), prior antibiotic use (p < 0.05), the presence of bacteremia (p = 0.01), the presence of comorbidities (p < 0.05), and multifocal disease (p < 0.01) were more frequent. The overall mortality rate was 15 %. The mortality-associated risk factors were the presence, at the time of admission, of hypotension (p < 0.01), multifocal disease (p < 0.01), bacteremia (p < 0.01), leukopenia (p < 0.01), severe anemia (p < 0.01), and metabolic acidosis (p < 0.01), among others. Conclusions: The prognostic factors of severity included prior antibiotic use, bacteremia, the presence of comorbidities, and presentation with multifocal disease. Mortality was significant; associated risk factors included the presence, at the time of admission, of hypotension, multifocal disease, leukopenia, severe anemia, and metabolic acidosis.

Prognostic factors of severity of invasive community acquired Staphylococcus aureus infections in children. / Factores pronósticos de gravedad de las infecciones invasivas por Staphylococcus aureus adquiridas en la comunidad en niños.

OBJECTIVE: To describe the clinical characteristics of invasive Staphylococcus aureus infections in children and identify the prognostic factors of severity and mortality. MATERIALS AND METHODS: Observational study in patients < 16 years old hospitalized between 2010 and 2015 due to invasive S. aureus infections at the Instituto de Medicina Tropical, in Asunción, Paraguay. Patients were distributed based on whether or not they required admission to the intensive care unit, and clinical, laboratory, and evolutionary outcome measures were compared. RESULTS: Out of the 107 included patients, 50 (47 %) developed bacteremia; 50 (47 %), pneumonia; and 21 (19 %), multifocal disease. Among the patients who were admitted to the intensive care unit (41 %), prior antibiotic use (p < 0.05), the presence of bacteremia (p = 0.01), the presence of comorbidities (p < 0.05), and multifocal disease (p < 0.01) were more frequent. The overall mortality rate was 15 %. The mortality-associated risk factors were the presence, at the time of admission, of hypotension (p < 0.01), multifocal disease (p < 0.01), bacteremia (p < 0.01), leukopenia (p < 0.01), severe anemia (p < 0.01), and metabolic acidosis (p < 0.01), among others. CONCLUSIONS: The prognostic factors of severity included prior antibiotic use, bacteremia, the presence of comorbidities, and presentation with multifocal disease. Mortality was significant; associated risk factors included the presence, at the time of admission, of hypotension, multifocal disease, leukopenia, severe anemia, and metabolic acidosis.

Objetivo: Describir las características clínicas de las infecciones invasivas por Staphylococcus aureus en niños e identificar los factores pronósticos de gravedad y mortalidad. Materiales y métodos: Estudio observacional, en pacientes < 16 años hospitalizados en 2010- 2015 por infecciones invasivas por S. aureus en el Instituto de Medicina Tropical, de Asunción, Paraguay. Los pacientes se distribuyeron según si habían requerido ingresar a la Unidad de Cuidados Intensivos o no, y se compararon variables clínicas, de laboratorio y evolutivas. Resultados: De los 107 pacientes incluidos, 50 (el 47 %) presentaron bacteremia; 50 (el 47 %), neumonía; y 21 (el 19 %), sepsis con focos múltiples. En los pacientes que ingresaron en la Unidad de Cuidados Intensivos (el 41 %), el uso previo de antibiótico (p < 0,05), la presencia de bacteremia (p = 0,01), de comorbilidad (p < 0,05) y la presentación con focos sépticos múltiples (p < 0,01) fueron más frecuentes. La mortalidad global fue del 15 %. Factores de riesgo asociados a mortalidad fueron, entre otros, la presencia, de hipotensión al ingresar (p < 0,01), focos sépticos múltiples (p < 0,01), bacteremia (p < 0,01), leucopenia (p < 0,01), anemia grave (p < 0,01) y acidosis metabólica (p < 0,01). Conclusiones: Los factores pronósticos de gravedad fueron el uso previo de antibióticos, la bacteremia, la presencia de comorbilidad y la presentación con focos sépticos múltiples. La mortalidad fue significativa; los factores de riesgo asociados fueron la presencia, al ingresar, de hipotensión, focos sépticos múltiples, leucopenia, anemia grave y acidosis metabólica.

Bacteriemias por Staphylococcus aureus adquirida en la comunidad: comportamiento clínico y severidad en niños

Introducción: La bacteriemia por Staphylococcus aureus (SA) constituye una de las más graves infecciones de la edad pediátrica. Objetivos: Evaluar las características epidemiológicas, clínicas y laboratoriales de niños con bacteriemias por SA adquiridas en la comunidad (SAAC), identificar factores de riesgos asociados a mortalidad. Materiales y métodos: Estudio retrospectivo en el que se incluyeron pacientes (pts) de ≤16 años, hospitalizados entre 2010-2018, con dx de bacteriemias por SAAC. Los datos clínicos y laboratoriales fueron introducidos en una base de datos de Excel y formateados para análisis. Resultados: Se identificaron 117 pts con una edad media de 56+53 meses, de los cuales 81 fueron≤ 5 años. La bacteriemia se asoció principalmente a neumonía (47% de los casos), presentando choque el 38% e ingreso a UCI el 40% de los pts. En el 27% (32/117) la bacteriemia fue por SAMR. La edad <5 años (p=0.0001), presencia de choque (p=0001), hospitalización en UCI (p=0.002, OR 3.58, IC95% 1.5-8.3) y la mortalidad (p=0.03, OR 2.65, IC95% 1.05-6.7) se asociaron a infección por SAMR. La mortalidad de esta serie fue del 21 % (25/117). La presencia de comorbilidad (p=0.006, OR3.66, IC95% 1.4-92), choque (p=0.0001, OR 87.6, IC 95% 11.5-687.7), focos múltiples infecciosos (p=0.007,OR3.46, IC 95% 1.3-8.9), aislamiento de SAMR (p=0.03, OR 2.65,IC 95% 1.1-6.7), y trombocitopenia <100 000/mm3 (p= 0.0001, OR 25.3, IC 95% 5-128) se asociaron a mortalidad. Conclusiones: El presente estudio muestra la severidad de la bacteriemia por SA. La resistencia a meticilina, la comorbilidad, la presencia de focos múltiples y choque se identificaron como factores asociados a mortalidad.

Introduction: Bacteremia due to Staphylococcus aureus (SA) is one of the most serious infections in the pediatric population. Objectives: To evaluate the epidemiological, clinical and laboratory characteristics of children with bacteremia due to SA acquired in the community (SAAC) and to identify risk factors associated with mortality. Materials and methods: This was a retrospective study in which patients (pts) ≤16 years, hospitalized between 2010-2018, with dx of bacteremia by SAAC were included. Clinical and laboratory data were entered into an Excel database and formatted for analysis. Results: We identified 117 pts with an average age of 56 + 53 months, of which 81 were ≤5 years. Bacteremia was associated mainly with pneumonia (47% of the cases), presenting with shock in 38% and admission to the ICU in 40% of the pts. In 27% (32/117) the bacteremia was caused by MRSA. Age <5 years (p = 0.0001), presence of shock (p = 0001), hospitalization in the ICU (p = 0.002, OR 3.58, 95% CI 1.5-8.3) and mortality (p = 0.03, OR 2.65, 95% CI 1.05-6.7) were associated with MRSA infection. The mortality in this series was 21% (25/117). The presence of comorbidities (p = 0.006, OR3.66, 95% CI 1.4-92), shock (p = 0.0001, OR 87.6, 95% CI 11.5-687.7), multiple infectious foci (p = 0.007, OR3.46, 95% CI 1.3-8.9), MRSA isolation (p = 0.03, OR 2.65, 95% CI 1.1-6.7), and thrombocytopenia <100 000 / mm3 (p = 0.0001, OR 25.3, 95% CI 5-128) were associated with mortality. Conclusions: This study shows the severity of SA bacteremia. Methicillin resistance, comorbidities, the presence of multiple infectious foci and shock were identified as factors associated with mortality.

Pioderma gangrenoso en pediatría. a propósito de un caso

RESUMEN El pioderma gangrenoso (PG) es una ulceración cutánea poco común, generalmente idiopática, asociada o no a trastornos sistémicos. La etiopatogenia del PG aún no se conoce bien. Clínicamente se clasifica en tipos ulcerativo, pustular, bulloso y vegetativo. También se han descrito algunas variantes atípicas y raras. El diagnóstico clínico, apoyado en estudios auxiliares (laboratoriales, anatomopatológicos). Se han propuesto algunos criterios para el diagnóstico de PG. El tratamiento consiste principalmente en corticosteroides y agentes inmunosupresores. Caso clínico: adolescente, femenino, sin patología de base, con antecedente de lesión ulcerosa en pierna derecha de 6 meses de evolución, que aumenta de tamaño en el tiempo, consulta en varias oportunidades con tratamientos ambulatorios tórpidos. Ante aparición de fiebre, dolor e impotencia funcional se interna. En el transcurso de la internación presenta rectorragia importante con descenso de Hb. Se realiza colonoscopia de urgencias y se logra unidad diagnóstica egresando con tratamiento apropiado luego de 26 DDI.

ABSTRACT Pyoderma gangrenosum (PG) is an uncommon cutaneous ulceration, usually idiopathic, associated or not with systemic disorders. The etiopathogenesis of PG is still not well understood. Clinically, it is classified into ulcerative, pustular, bullous and vegetative types. Some atypical and rare variants have also been described. The clinical diagnosis, supported by auxiliary studies (laboratorial, anatomopathological). Some criteria have been proposed for the diagnosis of PG. The treatment consists mainly of corticosteroids and immunosuppressive agents. Clinical case: adolescent, female, without basic pathology, with a history of ulcerative lesion in the right leg of 6 months of evolution, which increases in size over time, consulting on several occasions with torpid ambulatory treatments. In the presence of fever, pain and functional impotence is internal. In the course of hospitalization, it presents significant rectorrhagia with a decrease in Hb. An emergency colonoscopy is performed and a diagnostic unit is achieved with appropriate treatment after 26 DDI.

Infección urinaria: un problema frecuente en Pediatría. Revisión de la literatura

La Infección del tractourinario o infección urinaria (ITU) es una patología frecuente en la infancia, dado que el 8-10% de las niñas y el 2-3% de los niños tendrán una ITU sintomática antes de los siete años. Tiene riesgo potencial de producir daño renal permanente y progresivo, por lo que es importante la sospecha clínica para un diagnóstico y tratamiento precoces. El método de recolección de orina se valorará en función de la clínica y la necesidad de iniciar un tratamiento inmediato, realizando siempre el análisis de orina y urocultivo previos al inicio del tratamiento antibiótico. No hay consenso entre las guías de manejo clínico, sobre los métodos de imagen a ser utilizados después de la primera infección febril, por lo que es motivo de debate. El objetivo de este trabajo es realizar una revisión sobre los conceptos de diagnóstico y tratamiento en pacientes pediátricos con infección urinaria.

Infection of the urinary tract or urinary tract infection (UTI) is a frequent pathology in childhood, as 8-10% of girls and 2-3% of boys will have a symptomatic UTI before the age of seven. It has the potential to produce permanent and progressive renal damage, which is why a high clinical index of suspicion is important to achieve early diagnosis and treatment. The urine collection method should be based on the clinical symptoms and the need to initiate immediate treatment; a urine analysis and a sample for urine culture should be obtained prior to the initiation of antibiotic treatment. There is no consensus among the different clinical management guidelines as to the imaging methods to be used after the first febrile infection, which is why the topic is so controversial. This article's objective is to review the basics of the diagnosis and treatment of urinary tract infection in pediatric patients.

Epidemiología, clínica y factores pronósticos de Enfermedad Meningocóccica Invasora en un centro de referencia de Paraguay. 2005 a 2018

Resumen Introducción: La enfermedad meningocóccica ha sido y sigue siendo una causa importante de morbilidad y mortalidad. Objetivos: Analizar las características clínicas y epidemiológicas de pacientes con infección meningocóccica invasora hospitalizados en un centro hospitalario de referencia. Materiales y métodos: Estudio descriptivo, observacional y retrospectivo de revisión de historias clínicas de pacientes internados entre los años 2005 y 2018 en el Instituto de Medicina Tropical con aislamiento o detección de N. meningitidis en sangre o LCR. Resultados: Fueron captados 44 pacientes con enfermedad meningocóccica invasora durante el periodo estudiado (3±2 casos/año). Los casos predominaron en el grupo etario 15000 /mm3 (p=0,03), la plaquetopenia15000 /mm3, la leucopenia <5000/ mm3, y la plaquetopenia se asociaron a mayor mortalidad.

Abstract Introduction: Meningococcal disease has been and continues to be an important cause of morbidity and mortality around the world. Objectives: To analyze the clinical and epidemiological characteristics of patients with invasive meningococcal infection hospitalized in a reference hospital center. Materials and methods: A descriptive, observational and retrospective study based in the review of clinical records of patients admitted between 2005 and 2018 in the Institute of Tropical Medicine in whom Neisseria meningitidis was isolated o detected by PCR in blood or CSF. Results: Forty-four patients with invasive meningococcal disease were recruited during the period studied (3 ± 2 cases/year). The cases predominated in the age group 15000/mm3 (p=0.03), thrombocytopenia15,000/mm3, leukopenia <5000 / mm3, and thrombocytopenia were associated with increased mortality.

Factores pronósticos de mortalidad en niños con bacteriemias adquiridas en la comunidad (BAC) hospitalizados en un centro de referencia del Paraguay / Prognostic mortality factors in children with acquired bacteremia in the community (ABC) hospitalized at a tertiary medical center in Paraguay

Objetivo: Identificar etiologìa de BAC y factores pronósticos de mortalidad. Material y Método: Estudio retrospectivo de BAC en pacientes de 29 días a 16 años hospitalizados en un Centro de Referencia del Paraguay, periodo 2007 a 2015, se analizaron variables demográficas, clínicas y laboratoriales categorizando a los pacientes según el desenlace (Vivos o Muertos). Resultados: 187 casos de BAC , edad media 40 + 35 meses, M/F 1,4:1, edad < 1 año: 30,5% (57/187), 1 a 4 años 49,2% (92/187), 5 a 10 años 15,5% (29/187) y > 10 años 4,8 % (9/187). Diagnósticos de ingreso: Neumonía (78%), Infección de Piel y Partes Blandas (9%), Infección a Múltiples focos (7%), Meningitis (3,7%) Bacteriemia sin foco 2%. Las bacteriemias por Gram Positivos fueron más frecuentes que las bacteriemias por Gram Negativos: 91,4 vs 8,6% (p<0,05), aislamientos: S.pneumoniae, S.aureus, S.coagulasa negativo (2/2) y K. pneumoniae (46 %, 34%, 7,5% y 2%). Ingresaron a UCI 63 pacientes (33,7%), mortalidad 16,5 %. Variables asociadas a mortalidad: Edad <5 años (p<0,05), Desnutrición (p=0,02, RR= 2,4, IC95%: 1,1-5), Infección a múltiples focos(p=0,002, RR=3,2, IC 95%: 1,6-6,4), Choque p<0,001, RR19, IC95%:7,8-46), Glasgow <12 (p<0,001, RR=5,5, IC 95%:3,2-9,6), Sat O2 < 94% (p=0,007, RR 2, IC95%: 1,1-4) , Hb< 7 (p<0,01, RR: 11, IC95%: 6,8 a 19), GB > 15000, plaquetas < 100000 (p<0,001, RR=4,4, IC95%: 2,4- 7,8), Bacteriemia por Gram Positivos (p=0,001, RR=4,9, IC 95%: 1,5-15). Conclusión: En niños con BAC son más frecuentes las bacteriemias por Gram positivos. Se identificaron factores pronósticos de mortalidad.

Factores de riesgo de daño renal en pacientes pediátricos con infecciones urinarias recurrentes

Introducción: La infección urinaria es una patología frecuente, que puede causar cicatrices y daño renal con inducción de complicaciones futuras, como hipertensión arterial y enfermedad renal crónica. Objetivo: Identificar los factores predictores de riesgo de daño renal en niños con Infección del tracto urinario recurrente (ITUR). Método: Estudio de cohorte, retrospectivo, de pacientes 2 episodios de ITU (p=0,0005, OR 1,9-12, RR 3,2 (IC95% 1,6-6,5) y RVU de Grado III o mayor (p=0,0000003, OR 4-32, RR 6 (IC 95% 2,7-14). Conclusiones: 1 de cada 4 niños con ITUR presenta daño renal, una edad < 1 año, presencia de 2 o más episodios de ITUR y el RVU grado III o mayor que fueron factores asociados a daño renal.

Introduction: Urinary tract infection is a common pathology which can cause scarring and kidney damage, leading to future complications, such as hypertension and chronic kidney disease. Objective: To identify the predictive risk factors for kidney damage in children with recurrent urinary tract infection (ITUR). Methods: This was a retrospective, cohort study of patients 2 episodes of UTI (p = 0.0005 , OR 1.9-12, RR 3.2 (IC95% 1.6-6.5) and VUR of Grade III or greater (p = 0.0000003, OR 4-32, RR 6 (95% CI 2, 7-14) Conclusions: 1 out of every 4 children with ITUR presents renal damage, an age <1 year, presence of 2 or more episodes of ITUR and VUR grade III or greater were risk factors associated with kidney damage.

Factores pronósticos de mortalidad en la neumonía adquirida de la comunidad en niños que requieren hospitalización

Objetivo: Identificar los factores pronósticos de mortalidad en NAC en niños que requieren hospitalización. Método: Estudio observacional, que incluyó a pacientes (pts) <16 años que se hospitalizaron entre 2004-2008 por NAC, distribuyéndose en dos grupos según que hayan fallecido o sobrevivido durante la hospitalización. Se compararon variables demográficas, clínicas, laboratoriales, y evolutivas. La comorbilidad se definió en 3 categorías: I (sobrepeso, DCP I), II (cardiopatía congénita, Sindrome de Down) y III (VIH, cáncer hematológico, desnutrición grave). Se realizó análisis univariado y multivariado. Resultados: Se hospitalizaron 341 pts con NAC, (edad media 33,6+34,8 meses), de los cuales 37 (11%) fallecieron. La edad <6 meses (RR 0.12, IC 0.03-0.47, p=0.006), la presencia de comorbilidad II y III (RR 0.25, IC 0,14-0,45, p=0.00003), hipotensión (RR 0.05, IC 0.03-0.11, p=0.00001), convulsiones (RR 0.20, IC 0.10-0.39, p<0.05) o Glasgow<12 (RR 0.02, IC 0.01-0.05, p=0.00001) al ingreso se correlacionaron con mayor mortalidad. Laboratorialmente, la presencia de GB <4000 (RR 0.21, IC 0.07-0.07, p=0.02), pH<7.2, HCO3 <15 (RR 0.02, IC 0.01-0.06, p=0.00001), saturación de O2 <90% (RR 0.2, IC 0.11-0.36, p=0.0007), hiponatremia (RR 0.1, IC 0.04-0.23, p<0.05), y compromiso multilobar fueron significativamente más frecuentes en los que fallecieron (RR 0.06, IC 0.02-0.17, p<0.005). Durante la evolución clínica, el riesgo de morir se correlacionó con la necesidad de ARM y presencia de insuficiencia renal. (RR 0.04, IC 0.02-0.07, p=0.0001) Conclusiones. La mortalidad en NAC que se hospitaliza es significativa. Se han identificado condiciones predisponentes, variables demográficas, clínicas, de gabinete y evolutivas que son altamente predictivas de mortalidad.

Abstract Aim: To identify the prognostic factors of mortality in CAP in children requiring hospitalization. Method: An observational study, which included patients (pts) <16 years who were hospitalized between 2004-2008 for CAP, and distributed in two groups according to whether they died or survived during hospitalization. Demographic, clinical, laboratorial, and evolutionary variables were compared. Comorbidity was defined in 3 categories: I (overweight, DCP I), II (congenital heart disease, Down Sx) and III (HIV, hematologic cancer, severe malnutrition). Univariate and multivariate analyzes were performed. Results: 341 pts were hospitalized with CAP, (mean age 33.6 ± 34.8 months), of which 37 (11%) died. The presence of comorbidity II and III (RR 0.25, CI 0.14-0.45, p = 0.00003), hypotension (RR 0.05, CI 0.03-0.11, p = 0.00001), seizures (RR 0.20, IC 0.10-0.39, p <0.05) or Glasgow <12 (RR 0.02, IC 0.01-0.05, p = 0.00001) at admission were correlated with higher mortality. The presence of GB <4000 (RR 0.21, IC 0.07-0.07, p = 0.02), pH <7.2, HCO3 <15 (RR 0.02, IC 0.01-0.06, p = 0.00001), O2 saturation <90% (RR 0.16, p <0.05), and multilobar involvement were significantly more frequent in those who died (RR 0.06, CI 0.02-0.17, p <0.05) 0.005). During the clinical course, the risk of dying was correlated with the need for MRA and presence of renal failure. (RR 0.04, IC 0.02-0.07, p = 0.0001) Conclusions: Mortality in hospitalized CAP is significant. Predisposing conditions, demographic, clinical, cabinet and evolutionary variables that are highly predictive of mortality have been identified

Caso Clínico de Osteomielitis por Mycobacterium abscessus

Caso Clínico: El 14 de setiembre del año 2016, fue remitido al departamento de Urgencias del Instituto de Medicina tropical, un escolar de sexo masculino de 6 años de edad, procedente de Eusebio Ayala, cuyos antecedentes fueron relatados por la madre y se detallan a continuación. Lesión en planta del pie derecho, por objeto punzo cortante, de 42 días de evolución acompañado de tumefacción e impotencia funcional que impide la deambulación, desde el inicio del cuadro. Temperatura de 38 ºC 30 días antes de su ingreso, la cual persistió hasta la fecha, medicado con paracetamol e ibuprofeno por tiempo prolongado (1 mes) con los que cedía parcialmente. Al inicio del cuadro la madre acudió al hospital de Caacupé donde indicaron al niño Ibuprofeno, no cediendo el cuadro, posteriormente acudió a un centro médico privado donde le prescribieron cefalexina (500 mg) 5 cc vía oral cada 6 hs por 7 días, ante la falta de mejoría acudió nuevamente a otro centro privado donde le indicaron tratamiento con Amoxicilina- Sulbactam vía oral y TMP - SMX vía oral por 14 días. El traumatólogo del servicio ante la sospecha de Osteomielitis en pie derecho le realizo un toilette quirúrgico, en cuyo acto quirúrgico se tomó muestra de material purulento para cultivo cuyo resultado estaba pendiente). Se solicitó interconsulta a un infectólogo quien indico tratamiento parenteral con ciprofloxacina, clindamicina, amikacina y claritromicina por vía oral, hasta retorno del informe final del cultivo. Ante persistencia del cuadro y falta de medios económicos, el paciente fue remitido a nuestro servicio para manejo y seguimiento. Antecedentes patológicos personales: Niega cuadro similar anterior, niega internaciones previas, sin patologías de base

Abstract Clinical Case: On September 14, 2016, a 6-year-old male student from Eusebio Ayala was referred to the emergency department of the Tropical Medicine Institute, whose records were reported by the mother and detailed continuation. Injury in the right sole of the foot, due to sharp cutting, of 42 days of evolution accompanied by swelling and functional impotence that prevents ambulation, from the beginning of the picture. Temperature of 38 ºC 30 days before admission, which persisted to date, medicated with acetaminophen and ibuprofen for a prolonged time (1 month) with which it partially ceded. At the beginning of the study, the mother went to the Caacupé hospital where the child was given ibuprofen, not giving up the picture, then went to a private medical center where they prescribed cefalexine (500 mg) 5 cc orally every 6 hours for 7 days, before Lack of improvement returned to another private center where they were treated with Amoxicillin-Sulbactam oral and TMP-SMX oral for 14 days. The traumatologist of the service before the suspicion of Osteomyelitis in the right foot made a surgical toilette, in which surgical act was sample of purulent material for crop whose result was pending). Interconsultation was requested from an infectologist who indicated parenteral treatment with ciprofloxacin, clindamycin, amikacin and clarithromycin orally until the final culture report was returned. With persistence of the picture and lack of financial means, the patient was referred to our service for management and follow-up. Personal pathological history: Deny previous similar picture, deny previous hospitalizations, no basic pathologies

Clinical Characteristics and Risk Factors of Dengue Shock Syndrome in Children.

BACKGROUND: Dengue shock syndrome (DSS) represents one of the most severe manifestations of dengue virus infection. The objective of the present study was to analyze the clinical and laboratory characteristics, risk factors and outcome of DSS in children. METHODS: Patients <15 years old admitted with DSS during the 2012 and 2013 outbreak of serotype 2 of dengue virus in Paraguay were included. Demographic, clinical and laboratory data of patients with/without DSS were analyzed. RESULTS: Of 471 children hospitalized with dengue, 354 patients (75%) presented with shock at admission or developed later. The mean age of patients with DSS was 10.2 ± 4 years (no difference with patients without shock), without gender preference. Rash (50% vs. 56%), myalgias (45% vs. 40%), vomiting (66% vs. 68%) and bleeding manifestations (24% vs. 21.2%) were similar for 2 groups. Similarly, there was no difference in the frequency of DSS between primary versus secondary infection cases (76.2% vs. 71.6%, P = 0.3). Age group >5 years [odds ratio (OR) 1.6, 95% confidence interval (CI): 1-2.8, P < 0.05), presence of abdominal pain (OR 2.5, 95% CI: 1.3-4.9, P = 0.006), an activated partial thromboplastin time prolonged (OR 4; 95% CI: 1.6-10, P < 0.001) and low fibrinogen level (OR 2.5; 95% CI: 1-5.9, P = 0.02) were found significantly associated with DSS. About 12% of patients required intensive care unit admission, and 2 patients died (lethality 0.35%). CONCLUSIONS: This study validated most of the clinical variables present in the current WHO guidelines as markers of severe disease and add additional variables that can help to predict the risk of progression to shock.