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1.
Trop Med Int Health ; 26(12): 1668-1676, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34598312

RESUMEN

OBJECTIVES: In 2010, WHO published guidelines emphasising parasitological confirmation of malaria before treatment. We present data on changes in fever case management in a low malaria transmission setting of northern Tanzania after 2010. METHODS: We compared diagnoses, treatments and outcomes from two hospital-based prospective cohort studies, Cohort 1 (2011-2014) and Cohort 2 (2016-2019), that enrolled febrile children and adults. All participants underwent quality-assured malaria blood smear-microscopy. Participants who were malaria smear-microscopy negative but received a diagnosis of malaria or received an antimalarial were categorised as malaria over-diagnosis and over-treatment, respectively. RESULTS: We analysed data from 2098 participants. The median (IQR) age was 27 (3-43) years and 1047 (50.0%) were female. Malaria was detected in 23 (2.3%) participants in Cohort 1 and 42 (3.8%) in Cohort 2 (p = 0.059). Malaria over-diagnosis occurred in 334 (35.0%) participants in Cohort 1 and 190 (17.7%) in Cohort 2 (p < 0.001). Malaria over-treatment occurred in 528 (55.1%) participants in Cohort 1 and 196 (18.3%) in Cohort 2 (p < 0.001). There were 30 (3.1%) deaths in Cohort 1 and 60 (5.4%) in Cohort 2 (p = 0.007). All deaths occurred among smear-negative participants. CONCLUSION: We observed a substantial decline in malaria over-diagnosis and over-treatment among febrile inpatients in northern Tanzania between two time periods after 2010. Despite changes, some smear-negative participants were still diagnosed and treated for malaria. Our results highlight the need for continued monitoring of fever case management across different malaria epidemiological settings in sub-Saharan Africa.


Asunto(s)
Fiebre/diagnóstico , Fiebre/terapia , Pacientes Internos , Malaria/diagnóstico , Malaria/epidemiología , Adolescente , Adulto , Antimaláricos/uso terapéutico , Niño , Preescolar , Estudios de Cohortes , Pruebas Diagnósticas de Rutina/métodos , Femenino , Humanos , Incidencia , Masculino , Sobrediagnóstico , Sobretratamiento , Estudios Prospectivos , Factores de Riesgo , Tanzanía/epidemiología , Adulto Joven
2.
Trop Med Int Health ; 23(2): 164-172, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-29220120

RESUMEN

OBJECTIVES: To explore the relationship between Efavirenz (EFV) and neuropsychiatric symptoms among adults and adolescents living with human immunodeficiency virus (HIV) in Kilimanjaro, Tanzania. METHODS: Cross-sectional study among HIV-infected adults (age 18-65) and adolescents (age 12-17) on antiretroviral treatment attending Kilimanjaro Christian Medical Centre, Moshi, Tanzania. Neuropsychiatric symptoms were measured using the Hospital Anxiety and Depression Scale (HADS), the Symptom Checklist 90 (SCL-90) and the Mini-International Neuropsychiatric Interview (MINI). manova and chi-squared tests were used to test differences between EFV and non-EFV-treated participants. RESULTS: A total of 215 adults and 150 adolescents participated. About 52% of adults and 37% of adolescents used EFV. Among adults, depression scores were higher for those on EFV (HADS (Cohen's D: 0.38; P = 0.02) and SCL-90 (Cohen's D: 0.24; P = 0.03). Among adolescents, those on EFV had lower scores on depression (HADS (Cohen's D: 0.3; P = 0.02) and SCL-90 (Cohen's D: 0.1; P = 0.02). About 10% of adults reported suicidal thoughts, but there was no difference between those on EFV and those without. Lastly, adults on EFV reported higher levels of problematic alcohol use (P = 0.003). CONCLUSIONS: In line with the previous studies, EFV is associated with depressive symptoms and problematic alcohol use among HIV-infected adults in Tanzania. In contrast, EFV was associated with lower levels of depressive symptoms in adolescents in Tanzania. Particularly among adults, close monitoring of depressive symptoms and alcohol use is indicated.


Asunto(s)
Fármacos Anti-VIH/efectos adversos , Depresión/etiología , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/psicología , Inhibidores de la Transcriptasa Inversa/efectos adversos , Adolescente , Adulto , Factores de Edad , Fármacos Anti-VIH/administración & dosificación , Estudios Transversales , Depresión/prevención & control , Femenino , Humanos , Masculino , Salud Mental , Persona de Mediana Edad , Pruebas Neuropsicológicas , Inhibidores de la Transcriptasa Inversa/administración & dosificación , Encuestas y Cuestionarios , Tanzanía , Adulto Joven
3.
Clin Infect Dis ; 58(5): 638-47, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24336909

RESUMEN

BACKGROUND: The epidemiology of Salmonella Typhi and invasive nontyphoidal Salmonella (NTS) differs, and prevalence of these pathogens among children in sub-Saharan Africa may vary in relation to malaria transmission intensity. METHODS: We compared the prevalence of bacteremia among febrile pediatric inpatients aged 2 months to 13 years recruited at sites of high and low malaria endemicity in Tanzania. Enrollment at Teule Hospital, the high malaria transmission site, was from June 2006 through May 2007, and at Kilimanjaro Christian Medical Centre (KCMC), the low malaria transmission site, from September 2007 through August 2008. Automated blood culture, malaria microscopy with Giemsa-stained blood films, and human immunodeficiency virus testing were performed. RESULTS: At Teule, 3639 children were enrolled compared to 467 at KCMC. Smear-positive malaria was detected in 2195 of 3639 (60.3%) children at Teule and 11 of 460 (2.4%) at KCMC (P < .001). Bacteremia was present in 336 of 3639 (9.2%) children at Teule and 20 of 463 (4.3%) at KCMC (P < .001). NTS was isolated in 162 of 3639 (4.5%) children at Teule and 1 of 463 (0.2%) at KCMC (P < .001). Salmonella Typhi was isolated from 11 (0.3%) children at Teule and 6 (1.3%) at KCMC (P = .008). With NTS excluded, the prevalence of bacteremia at Teule was 5.0% and at KCMC 4.1% (P = .391). CONCLUSIONS: Where malaria transmission was intense, invasive NTS was common and Salmonella Typhi was uncommon, whereas the inverse was observed at a low malaria transmission site. The relationship between these pathogens, the environment, and the host is a compelling area for further research.


Asunto(s)
Bacteriemia/epidemiología , Infecciones por Salmonella/epidemiología , Salmonella/aislamiento & purificación , Adolescente , Niño , Preescolar , Coinfección/epidemiología , Femenino , Humanos , Lactante , Malaria/epidemiología , Masculino , Prevalencia , Salmonella/clasificación , Tanzanía/epidemiología
5.
Front Microbiol ; 14: 1277019, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38235427

RESUMEN

Salmonella is one of the most frequent causes of diarrhea globally. This study used a One Health approach to identify Salmonella species in children admitted with diarrhea and tested samples from the cases' household environment to investigate their genetic similarity using whole genome sequencing. Surveillance of hospitalized diarrhea cases among children under 5 years was conducted in rural and urban Moshi Districts in the Kilimanjaro Region of Tanzania from July 2020 through November 2022. Household visits were conducted for every child case whose parent/caregiver provided consent. Stool samples, water, domestic animal feces, meat, and milk were collected and tested for Salmonella. Isolates were sequenced on the Illumina NextSeq platform. Multilocus Sequence Typing and phylogenetic analyses were performed to map the genetic relatedness of the isolates. Salmonella was isolated from 72 (6.0%) of 1,191 samples. The prevalence of Salmonella in children with diarrhea, domestic animal feces, food, and water was 2.6% (n = 8/306), 4.6% (n = 8/174), 4.2% (n = 16/382), and 17.3% (n = 39/225), respectively. Four (1.3%) of the 306 enrolled children had a Salmonella positive sample taken from their household. The common sequence types (STs) were ST1208, ST309, ST166, and ST473. Salmonella Newport was shared by a case and a raw milk sample taken from the same household. The study revealed a high diversity of Salmonella spp., however, we detected a Salmonella clone of ST1208 isolated at least from all types of samples. These findings contribute to understanding the epidemiology of Salmonella in the region and provide insight into potential control of foodborne diseases through a One Health approach.

6.
Pathogens ; 12(4)2023 Apr 19.
Artículo en Inglés | MEDLINE | ID: mdl-37111504

RESUMEN

Despite the availability and wide coverage of rotavirus vaccinations in Tanzania, there is still a significant number of diarrhea cases being reported, with some patients requiring hospital admission. We investigated diarrhea-causing pathogens and determined the effect of co-infection on clinical symptoms. Total nucleic acid was extracted from archived stool samples (N = 146) collected from children (0-59 months) admitted with diarrhea in health facilities in Moshi, Kilimanjaro. Pathogen detection was performed using the quantitative polymerase chain reaction with custom TaqMan Array cards. The Poisson model was used to determine the effect of co-infection on clinical presentation during admission. Of all the participants, 56.85% were from rural Moshi with a median age of 11.74 months (IQR: 7.41-19.09). Vomiting (88.36%) and a fever (60.27%) were the most frequent clinical manifestations. At least one diarrhea-associated pathogen was detected in 80.14% (n = 117) of the study population. The most prevalent pathogens were rotavirus 38.36% (n = 56), adenovirus 40/41 19.86% (n = 29), Shigella/EIEC 12.33% (n = 18), norovirus GII 11.44% (n = 17) and Cryptosporidium 9.59% (n = 14). Co-infections were detected in 26.03% of the study population (n = 38). The presence of multiple pathogens in the stool samples of children with diarrhea indicates poor sanitation and may have significant implications for disease management and patient outcomes.

7.
PLoS Negl Trop Dis ; 16(7): e0010516, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35788572

RESUMEN

Growing evidence suggests considerable variation in endemic typhoid fever incidence at some locations over time, yet few settings have multi-year incidence estimates to inform typhoid control measures. We sought to describe a decade of typhoid fever incidence in the Kilimanjaro Region of Tanzania. Cases of blood culture confirmed typhoid were identified among febrile patients at two sentinel hospitals during three study periods: 2007-08, 2011-14, and 2016-18. To account for under-ascertainment at sentinel facilities, we derived adjustment multipliers from healthcare utilization surveys done in the hospital catchment area. Incidence estimates and credible intervals (CrI) were derived using a Bayesian hierarchical incidence model that incorporated uncertainty of our observed typhoid fever prevalence, of healthcare seeking adjustment multipliers, and of blood culture diagnostic sensitivity. Among 3,556 total participants, 50 typhoid fever cases were identified. Of typhoid cases, 26 (52%) were male and the median (range) age was 22 (<1-60) years; 4 (8%) were aged <5 years and 10 (20%) were aged 5 to 14 years. Annual typhoid fever incidence was estimated as 61.5 (95% CrI 14.9-181.9), 6.5 (95% CrI 1.4-20.4), and 4.0 (95% CrI 0.6-13.9) per 100,000 persons in 2007-08, 2011-14, and 2016-18, respectively. There were no deaths among typhoid cases. We estimated moderate typhoid incidence (≥10 per 100 000) in 2007-08 and low (<10 per 100 000) incidence during later surveillance periods, but with overlapping credible intervals across study periods. Although consistent with falling typhoid incidence, we interpret this as showing substantial variation over the study periods. Given potential variation, multi-year surveillance may be warranted in locations making decisions about typhoid conjugate vaccine introduction and other control measures.


Asunto(s)
Fiebre Tifoidea , Vacunas Tifoides-Paratifoides , Teorema de Bayes , Femenino , Humanos , Incidencia , Masculino , Encuestas y Cuestionarios , Tanzanía/epidemiología , Fiebre Tifoidea/epidemiología , Fiebre Tifoidea/prevención & control
8.
Clin Microbiol Infect ; 28(8): 1150.e1-1150.e6, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35358686

RESUMEN

OBJECTIVE: Numerous tuberculosis (TB) deaths remain undetected in low-resource endemic settings. With autopsy-confirmed tuberculosis as our standard, we assessed the diagnostic performance of Xpert MTB/RIF Ultra (Ultra; Cepheid) on nasopharyngeal specimens collected postmortem. METHODS: From October 2016 through May 2019, we enrolled pediatric and adult medical deaths to a prospective autopsy study at two referral hospitals in northern Tanzania with next-of-kin authorization. We swabbed the posterior nasopharynx prior to autopsy and tested the samples later by Ultra. At autopsy we collected lung, liver, and, when possible, cerebrospinal fluid for mycobacterial culture and histopathology. Confirmed tuberculosis was defined as Mycobacterium tuberculosis complex recovery by culture with consistent tissue histopathology findings; decedents with only histopathology findings, including acid-fast staining or immunohistochemistry, were defined as probable tuberculosis. RESULTS: Of 205 decedents, 78 (38.0%) were female and median (range) age was 45 (0,96) years. Twenty-seven (13.2%) were found to have tuberculosis at autopsy, 22 (81.5%) confirmed and 5 (18.5%) probable. Ultra detected M. tuberculosis complex from the nasopharynx in 21 (77.8%) of 27 TB cases (sensitivity 70.4% [95% confidence interval {CI} 49.8-86.2%], specificity 98.9% [95% CI 96.0-99.9%]). Among confirmed TB, the sensitivity increased to 81.8% (95% CI 59.7-94.8%). Tuberculosis was not included as a death certificate diagnosis in 14 (66.7%) of the 21 MTBc detections by Ultra. DISCUSSION: Nasopharyngeal Ultra was highly specific for identifying in-hospital tuberculosis deaths, including unsuspected tuberculosis deaths. This approach may improve tuberculosis death enumeration in high-burden countries.


Asunto(s)
Mycobacterium tuberculosis , Tuberculosis Pulmonar , Tuberculosis , Adulto , Niño , Femenino , Humanos , Masculino , Mycobacterium tuberculosis/genética , Nasofaringe , Estudios Prospectivos , Rifampin , Sensibilidad y Especificidad , Esputo/microbiología , Tanzanía/epidemiología , Tuberculosis/diagnóstico , Tuberculosis Pulmonar/diagnóstico
9.
Clin Infect Dis ; 53(4): e8-15, 2011 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-21810740

RESUMEN

BACKGROUND: The importance of Q fever, spotted fever group rickettsiosis (SFGR), and typhus group rickettsiosis (TGR) as causes of febrile illness in sub-Saharan Africa is unknown; the putative role of Q fever as a human immunodeficiency virus (HIV) coinfection is unclear. METHODS: We identified febrile inpatients in Moshi, Tanzania, from September 2007 through August 2008 and collected acute- and convalescent-phase serum samples. A ≥4-fold increase in immunoglobulin (Ig) G immunfluorescence assay (IFA) titer to Coxiella burnetii phase II antigen defined acute Q fever. A ≥4-fold increase in IgG IFA titer to Rickettsia conorii or Rickettsia typhi antigen defined SFGR and TGR, respectively. RESULTS: Among 870 patients, 483 (55.5%) were tested for acute Q fever, and 450 (51.7%) were tested for acute SFGR and TGR. Results suggested acute Q fever in 24 (5.0%) patients and SFGR and TGR in 36 (8.0%) and 2 (0.5%) patients, respectively. Acute Q fever was associated with hepato- or splenomegaly (odds ratio [OR], 3.1; P = .028), anemia (OR, 3.0; P = .009), leukopenia (OR, 3.9; P = .013), jaundice (OR, 7.1; P = .007), and onset during the dry season (OR, 2.7; P = .021). HIV infection was not associated with acute Q fever (OR, 1.7; P = .231). Acute SFGR was associated with leukopenia (OR, 4.1; P = .003) and with evidence of other zoonoses (OR, 2.2; P = .045). CONCLUSIONS: Despite being common causes of febrile illness in northern Tanzania, Q fever and SFGR are not diagnosed or managed with targeted antimicrobials. C. burnetii does not appear to be an HIV-associated co-infection.


Asunto(s)
Fiebre/epidemiología , Fiebre Q/epidemiología , Infecciones por Rickettsia/epidemiología , Enfermedad Aguda , Adolescente , Adulto , Anciano , Distribución de Chi-Cuadrado , Niño , Preescolar , Coxiella burnetii/aislamiento & purificación , Femenino , Infecciones por VIH/epidemiología , Hospitalización , Humanos , Lactante , Masculino , Persona de Mediana Edad , Prevalencia , Estudios Prospectivos , Fiebre Q/microbiología , Infecciones por Rickettsia/microbiología , Rickettsia conorii/aislamiento & purificación , Rickettsia typhi/aislamiento & purificación , Tanzanía/epidemiología
10.
Trop Med Int Health ; 16(7): 830-7, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21470347

RESUMEN

OBJECTIVE: To describe the contribution of paediatric HIV and of HIV co-infections to admissions to a hospital in Moshi, Tanzania, using contemporary laboratory methods. METHODS: During 1 year, we enrolled consecutively admitted patients aged ≥2 months and <13 years with current or recent fever. All patients underwent standardized clinical history taking, a physical examination and HIV antibody testing; standard aerobic blood cultures and malaria film were also done, and hospital outcome was recorded. Early infant HIV diagnosis by HIV-1 RNA PCR was performed on those aged <18 months. HIV-infected patients also received serum cryptococcal antigen testing and had their CD4-positive T-lymphocyte count and percent determined. RESULTS: A total of 467 patients were enrolled whose median age was 2 years (range 2 months-13 years); Of those patients, 57.2% were female and 12.2% were HIV-infected. Admission clinical diagnosis of HIV disease was made in 10.7% and of malaria in 60.4%. Of blood cultures, 5.8% grew pathogens; of these 25.9% were Salmonella enterica (including 6 Salmonella Typhi) and 22.2%Streptococcus pneumoniae. Plasmodium falciparum was identified on blood film of 1.3%. HIV infection was associated with S. pneumoniae (odds ratio 25.7, 95% CI 2.8, 234.0) bloodstream infection (BSI), but there was no evidence of an association with Escherichia coli or P. falciparum; Salmonella Typhi BSI occurred only among HIV-uninfected participants. The sensitivity and specificity of an admission clinical diagnosis of malaria were 100% and 40.3%; and for an admission diagnosis of bloodstream infection, they were 9.1% and 86.4%, respectively. CONCLUSION: Streptococcus pneumoniae is a leading cause of bloodstream infection among paediatric admissions in Tanzania and is closely associated with HIV infection. Malaria was over-diagnosed clinically, whereas invasive bacterial disease was underestimated. HIV and HIV co-infections contribute to a substantial proportion of paediatric febrile admissions, underscoring the value of routine HIV testing.


Asunto(s)
Infecciones Oportunistas Relacionadas con el SIDA/epidemiología , Infecciones Oportunistas Relacionadas con el SIDA/microbiología , Infecciones Bacterianas/epidemiología , Infecciones Bacterianas/microbiología , Pacientes Internos/estadística & datos numéricos , Malaria/epidemiología , Micosis/epidemiología , Infecciones Oportunistas Relacionadas con el SIDA/mortalidad , Adolescente , Bacteriemia/epidemiología , Bacteriemia/microbiología , Infecciones Bacterianas/mortalidad , Recuento de Linfocito CD4 , Niño , Preescolar , Femenino , Fiebre/microbiología , Infecciones por VIH/complicaciones , Infecciones por VIH/diagnóstico , VIH-1/aislamiento & purificación , Mortalidad Hospitalaria , Hospitalización , Humanos , Lactante , Malaria/diagnóstico , Masculino , Micosis/mortalidad , Plasmodium falciparum/aislamiento & purificación , Salmonella enterica/aislamiento & purificación , Streptococcus pneumoniae/aislamiento & purificación , Tanzanía/epidemiología
12.
Infect Dis (Auckl) ; 13: 1178633720948860, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32922028

RESUMEN

BACKGROUND: Worldwide prevalence of dyslipidemia in HIV-infected children on antiretroviral medications (ARVs) is rising due to extensive use of treatment during their entire lives. Dyslipidemia is the potential side effect of ARVs, especially in individuals taking protease inhibitors. The objective of this study was to determine the prevalence of dyslipidemia in HIV-infected children on ARVs receiving care at Kilimanjaro Christian Medical Centre (KCMC) in Tanzania. METHODS: This was a cross-sectional hospital-based study conducted from September 2015 to May 2016 at KCMC. HIV-infected children and adolescents less than 17 years on ARVs for more than 6 months were enrolled. Blood samples were taken to determine levels of triglycerides (TGs), total cholesterol, lipoproteins (including low-density lipoprotein (LDL) and high-density lipoprotein (HDL)), CD4+ T cells, and viral load (VL). Anthropometric measurements were used to assess nutritional status. SPSS 20.0 was used for analysis. Logistic regression estimated odds ratio (OR) and 95% confidence interval (CI), and P value <.05 was considered significant. Written consent was obtained from parents/guardians on behalf of their children and assent for older children. RESULTS: A total of 260 participants were included in the study; the median age at HIV diagnosis was 3 (interquartile range (IQR) = 1-6) years. The overall prevalence of dyslipidemia was 46.5% with hypercholesterolemia (⩾200 mg/dl) of 11.2%, HDL (<35 mg/dl) of 22.7%, LDL (⩾130 mg/dl) of 7.7%, and hyperglyceridemia (TG ⩾150 mg/dl) of 12.3%. Children aged between 6 and 12 years at HIV diagnosis had 2.7 times higher odds of developing dyslipidemia compared with younger age at diagnosis (OR = 2.7; 95% CI = 1.1-6.6). Patients with advanced (OR = 6.4; 95% CI = 1.5-27.1) or severe (OR = 9.8; 95% CI = 1.2-76.5) HIV-associated immunodeficiency at diagnosis had higher odds of developing dyslipidemia. Protease inhibitor use was associated with higher odds of developing dyslipidemia (OR = 3.1; 95% CI = 1.4-7.1). CONCLUSION: Late diagnosis of HIV at 6 years of age or more, advanced, or severe immunosuppression, and the use of protease inhibitors were independent predictors of dyslipidemia in children on ARVs after 6 months of treatment, and with low HDL levels observed most commonly. Monitoring lipid profiles in children, especially those on protease inhibitors and with advanced/severe immunosuppression at diagnosis, may help in preventing future complications.

13.
Pediatr Infect Dis J ; 28(6): 493-7, 2009 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-19436238

RESUMEN

BACKGROUND: The World Health Organization (WHO) has recommended the use of clinical staging alone and with total lymphocyte count to identify HIV infected children in need of antiretroviral therapy (ART) in resource-limited settings, when CD4 cell count is not available. METHODS: We prospectively enrolled children obtaining care for HIV infection at the Kilimanjaro Christian Medical Centre Pediatric Infectious Diseases Clinic in Moshi, Tanzania between March 2004 and May 2006 for this cohort study. RESULTS: One hundred ninety two (89.7%) of 214 children met WHO ART initiation criteria based on clinical staging or CD4 cell count. Several low-cost measures identified individuals who met WHO ART initiation criteria to the following degree: WHO stages 3 or 4 had 87.5% (95% CI, 82.8-92.1) sensitivity and, by definition, 100% (CI, 100-100) specificity; WHO recommended advance disease TLC cutoffs: sensitivity = 23.9% (95% CI, 17.3-30.5) specificity = 78.2% (95% CI, 67.3-89.1). Low TLC was a common finding, (50 of 214; 23%); however, it did not improve the sensitivity or specificity of clinical staging in identifying the severely immunosuppressed stage 2 children. Growth failure or use of total lymphocyte counts in isolation were not reliable indicators of severe immunosuppression or need to initiate ART. CONCLUSION: The use of total lymphocyte count does not improve the ability to identify children in need of ART compared with clinical staging alone. Low absolute lymphocyte count did not correlate with severe immunosuppression based on CD4 cell count in this cohort.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/inmunología , Recuento de Linfocitos , Adolescente , Biomarcadores , Recuento de Linfocito CD4 , Niño , Preescolar , Estudios de Cohortes , Femenino , Infecciones por VIH/diagnóstico , Infecciones por VIH/epidemiología , Humanos , Tolerancia Inmunológica , Lactante , Linfocitos/inmunología , Masculino , Valor Predictivo de las Pruebas , Pronóstico , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Tanzanía , Organización Mundial de la Salud
14.
Afr Health Sci ; 19(4): 3208-3216, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32127898

RESUMEN

BACKGROUND: Helicobacter pylori frequently causes gastritis and peptic ulcers, and affected children are at risk of developing gastric carcinoma later in adulthood. METHODS: This was a Hospital based cross sectional study. A total of 200 children aged 6 months to 14 years were enrolled. Study subjects were tested for H. pylori using a standard serology rapid test measuring immunoglobulin G for H. pylori. For risk factors, Chi-square tests were used to test for association and then, odds ratios and their corresponding 95% confidence intervals and p-values were computed using logistic regression. RESULTS: The overall seroprevalence of H. pylori was 11.5%. The following factors were associated with H. pylori infection: Age group above 10 years, keeping a dog and household size. The independent predictors of H. pylori were: Fathers' occupation, keeping a dog, indoor tap water, age group, household size and diabetes mellitus type 1.. CONCLUSION: The seroprevalence of H. pylori antibodies was lower compared to most developing countries. Keeping a dog, household size, indoor tap water, fathers' occupation and diabetes mellitus type 1 were found to be independent predictors of presence of H. pylori antibodies.


Asunto(s)
Anticuerpos Antibacterianos/sangre , Comorbilidad , Infecciones por Helicobacter/complicaciones , Infecciones por Helicobacter/epidemiología , Infecciones por Helicobacter/inmunología , Adolescente , Factores de Edad , Niño , Preescolar , Estudios Transversales , Femenino , Humanos , Lactante , Modelos Logísticos , Masculino , Oportunidad Relativa , Factores de Riesgo , Estudios Seroepidemiológicos , Tanzanía/epidemiología
15.
East Afr Health Res J ; 3(1): 42-47, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-34308194

RESUMEN

BACKGROUND: Iron depletion results from reduced iron stores, and it is an early stage of disease progression before iron deficiency, which leads to iron deficiency anaemia (IDA). IDA is associated with delayed infant growth and development, diminished cognitive function, poor academic performance, decreased exercise tolerance, and impaired immune function. This study aimed to determine the prevalence of iron depletion and IDA and factors associated with low ferritin levels among children under 5-years-old receiving care at Kilimanjaro Christian Medical Centre (KCMC) in Moshi, Tanzania. METHODS: Under-5 children presenting at KCMC were successively enrolled and screened for iron depletion and IDA using complete blood count and serum ferritin levels. The generally accepted World Health Organization cut-off levels for normal haemoglobin (Hb) and ferritin level were used. Iron depletion, iron deficiency, and IDA prevalences were estimated in relation to the combination measures of haemoglobin, mean corpuscular volume, and ferritin levels. Dietary and sociodemographic characteristic of the children were recorded after parents or caretakers provided informed consent. Data analysis was conducted using SPSS version 21.0. RESULTS: A total of 303 children aged 2 to 59 months were enrolled in the study. Anaemia was detected in169 (55.8%) children. Children aged 2 to 12 months had a higher prevalence of anaemia (n=101, 60.1%). The overall prevalences of iron depletion, iron deficiency with no anaemia, and IDA were 2.6% (n=8), 9.6% (n=29), and 28.1% (n=84), respectively. Low ferritin levels were detected in 124 (40.9%) children. Drinking more than 500 ml of cow's milk per day was associated with an increased risk of anaemia (adjusted odds ratio [AOR] 5.6; 95% confidence interval [CI], 2.6 to 12.1) relative to those not drinking cow's milk. Children whose families had meals that included beef more than 3 times per week were less likely to have low ferritin (AOR 0.6; 95% CI, 0.3 to 1.3), though the difference was not significant. CONCLUSION: The IDA prevalence among children in the Kilimanjaro area was high, with more than 50% of infants being anaemic. Drinking cow's milk was associated with an increased risk of IDA. Future community-based research is recommended to elucidate more details about iron deficiency in the general population.

16.
Lancet HIV ; 6(4): e250-e258, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30770324

RESUMEN

BACKGROUND: Efavirenz is commonly prescribed for children with HIV infection, yet little is known about risks of neuropsychiatric side-effects. We aimed to compare competence (social involvement, activities, and school performance) and psychopathology (internalising and externalising problems), cognitive performance (intelligence and working memory), and adherence in Tanzanian children on an efavirenz-based versus a non-efavirenz-based regimen. METHODS: In this multicentre, cross-sectional, observational study, we included consecutive children (aged 6-12 years) with HIV infection, on combination antiretroviral therapy (cART) for at least 6 months, and with viral loads of less than 1000 copies per mL from HIV care clinics of three primary health facilities and three referral hospitals in Moshi, Kilimanjaro, Tanzania. Children with acute illnesses, medication switch in the 6 months before the study visit, and any history of brain injury or developmental delay before cART initiation were excluded. All interviews and assessments were done by trained local research nurses under the supervision of a medical doctor. The primary outcomes, competence and psychopathology, were measured with the Child Behavior Checklist. We used ANCOVA to assess differences between groups. This study is registered with ClinicalTrials.gov, number NCT03227653. FINDINGS: Between June 19, 2017, and Dec 14, 2017, 141 children were analysed, of whom 72 (51%) used efavirenz-based cART and 69 (49%) used non-efavirenz-based cART. After controlling for age, sex, and clinical and demographic confounders, we observed lower competence (adjusted mean difference -2·43 [95% CI -4·19 to -0·67], p=0·0071), largely driven by lower school performance scores (adjusted mean difference -0·91 [-1·42 to -0·40], p=0·00055), in the efavirenz group than in the non-efavirenz group. More total (adjusted mean difference 5·96 [95% CI -1·12 to 13·04], p=0·098) and internalising (adjusted mean difference 2·00 [-0·29 to 4·29], p=0·086) behavioural problems were seen in the efavirenz group than in the non-efavirenz group, although these findings were non-significant. No differences were found in externalising problems (adjusted mean difference 0·78 [95% CI -1·55 to 3·11], p=0·51). INTERPRETATION: Our results suggest that treatment with efavirenz in children is associated with a mild increase in neuropsychiatric symptoms, especially in children who receive doses higher than or equal to the WHO recommended doses for efavirenz. Clinical awareness and adequate follow-up of neuropsychiatric symptoms in efavirenz in children remain warranted. FUNDING: Aidsfonds, Radboud University Medical Center.


Asunto(s)
Terapia Antirretroviral Altamente Activa/efectos adversos , Benzoxazinas/efectos adversos , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Trastornos del Neurodesarrollo/inducido químicamente , Trastornos del Neurodesarrollo/patología , Inhibidores de la Transcriptasa Inversa/efectos adversos , Alquinos , Terapia Antirretroviral Altamente Activa/métodos , Benzoxazinas/administración & dosificación , Niño , Estudios Transversales , Ciclopropanos , Femenino , Humanos , Entrevistas como Asunto , Masculino , Pruebas Neuropsicológicas , Inhibidores de la Transcriptasa Inversa/administración & dosificación , Tanzanía , Carga Viral
17.
Oxf Med Case Reports ; 2018(10): omy070, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30302262

RESUMEN

Bee sting has been identified as among causative agents of nephrotoxic acute tubular necrosis which may lead to acute kidney injury. Bee envenomation has medicinal properties but when a higher dose is inoculated may cause severe anaphylaxis with very poor prognosis. We report a 12-year-old boy with acute kidney injury following multiple bee stings who recovered well after hemodialysis.

18.
East Afr Health Res J ; 2(1): 33-42, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-34308173

RESUMEN

BACKGROUND: More than 90% of HIV in children occurs through mother-to-child transmission. Breastfeeding is one of several factors associated with transmission of HIV, and, because of this, infant feeding practice is one of the cornerstones in the effort to reduce HIV transmission in children. World Health Organization guidelines from 2012 recommend exclusive breastfeeding to all infants for first 6 months of life. However, many factors contribute to the adherence of mothers to exclusive breastfeeding (EBF) recommendations. The aim of this study was to determine what factors likely influence adherence to exclusive breastfeeding in mothers of HIV-exposed infants receiving care at Kilimanjaro Christian Medical Centre. METHODS: A cross-sectional hospital-based study was conducted from September 2012 to March 2013 at Kilimanjaro Christian Medical Centre in Moshi. All mothers of HIV-exposed infants aged 6 to 12 months receiving care at child-centred family care clinic who consented to participate in the study were included. Data were collected using a pretested structured questionnaire and analysed using SPSS version 16.0 statistical package. RESULTS: Of the 128 mothers of HIV-exposed infants enrolled in the study, 71 (55.5%) adhered to EBF for 6 months. No statistical significance was seen between adherence status and maternal characteristics in bivariate analysis (P>.05). The mean age and standard deviation of initiating other foods by mothers who did not adhere was 3.32 months ± 1.24. Of 57 (44.5%) non-adherent mothers, one-tenth of them practised mixed breastfeeding and the rest stopped breastfeeding completely. Fear of postnatal transmission of HIV through breastfeeding and inadequate breast milk production were the most common reasons for non-adherence to EBF. CONCLUSION: Adherence to the recommended duration for EBF by mothers to their HIV-exposed infants is still a challenge. Ongoing intensive feeding counselling and education on EBF may increase the number of mother who can adhere to EBF in our society.

19.
East Afr Health Res J ; 1(2): 95-104, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-34308164

RESUMEN

BACKGROUND: Toxoplasmosis, other (syphilis, varicella-zoster, parvovirus B19, and hepatitis B), rubella, cytomegalovirus (CMV), and herpes simplex virus type 1 and type 2 (HSV-1 and HSV-2) - known by the acronym TORCH - is a group of infections affecting both mothers and their unborn babies with adverse short- and long-term outcomes. The majority of infected mothers are asymptomatic, which leaves only speculation as to the probable cause of many congenital anomalies, stillbirths, prematurity, and death resulting from TORCH infections. The main objective of this study was to investigate previous exposure to TORCH infections by measuring the seroprevalence of TORCH antibodies in pregnant women and their newborns receiving care at Kilimanjaro Christian Medical Centre (KCMC), Moshi, Tanzania. METHODS: This was a cross-sectional, hospital-based study conducted at KCMC from December 2013 to April 2014. Of 350 pregnant women enrolled in the study, we tested 347 pregnant women attending the antenatal clinic and who opted to deliver at KCMC. Cord blood was collected and analysed for 309 of their newborns. To identify immunoglobulin G (IgG) and immunoglobulin M (IgM) antibodies in mothers and IgM antibodies in newborns, we used enzyme-linked immunosorbent assay testing. A structured questionnaire was used to collect data of mothers and their newborns. Data analysis was done using SPSS version 20. RESULTS: The seroprevalence of IgG antibodies to TORCH infections among pregnant women was 154 (44.4%) for toxoplasmosis, 311 (89.6%) for rubella, 343 (98.6%) for CMV, and 346 (99.7%) for HSV-1 and HSV-2; 141 (40.6%) had been exposed to all 4 infections. For HSV-1 and HSV-2, the IgM antibodies were found in 137 (39.5%) of the 347 pregnant women included in this study. Age above 35 years (OR 6.15; 95% CI, 1.22-31.1; P=.028) and multiparity (OR 1.63; 95% CI, 1.01-2.62; P=.045) were associated with higher risk of being exposed to all TORCH infections. A total of 11 newborns had IgM antibodies to HSV-1 and HSV-2 giving a seroprevalence of 3.6%, and one newborn had IgM antibodies to rubella, giving a seroprevalence of 0.3%. None of the newborns had antibodies to toxoplasmosis and CMV. CONCLUSION: Exposure to TORCH infections was high among pregnant women in our population. Older age and multi-parity were associated with a higher risk of being exposed to all TORCH infections. Seroprevalence to HSV-1 and HSV-2 was high in newborns. The higher IgM antibodies to HSV-1 and HSV-2 among pregnant mothers and their newborns may disturb maternal, fetal, and neonatal health, and therefore we recommend establishing treatment protocol to support management of pregnant women and newborns who are seropositive for IgM antibodies.

20.
Int J STD AIDS ; 17(7): 459-62, 2006 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-16820075

RESUMEN

Few data exist on the current capacity of Tanzanian health-care facilities to deliver antiretroviral therapy (ART). We evaluated this capacity among Northern Zone facilities in 2004 using a questionnaire that addressed human resources, clinical facilities and services, and laboratory capacity. Of 19 facilities surveyed, nine (47%) had staff trained to manage ART and three (16%) prescribed ART. Two (11%) offered CD4 counts, five (26%) offered liver function tests, 16 (84%) offered chest radiography, and 18 (95%) offered acid-fast sputum staining. Of 12 (67%) facilities offering outpatient HIV/AIDS services, 12 (100%) provided co-trimoxazole to outpatients and six (50%) provided isoniazid (INH). All 19 (100%) facilities offered rapid HIV tests and full blood pictures. Overall in 2004, facilities needed strengthening to increase staff training in ART management and to implement INH for treatment of latent tuberculosis. Laboratory facilities for ART monitoring were inadequate, and outpatient ART was limited.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/tratamiento farmacológico , Instituciones de Salud , Investigación sobre Servicios de Salud , Atención Ambulatoria/organización & administración , Atención Ambulatoria/normas , Atención Ambulatoria/estadística & datos numéricos , Fármacos Anti-VIH/administración & dosificación , Infecciones por VIH/virología , VIH-1/efectos de los fármacos , Instituciones de Salud/normas , Administración de Instituciones de Salud , Fuerza Laboral en Salud/estadística & datos numéricos , Humanos , Laboratorios/organización & administración , Laboratorios/normas , Evaluación de Procesos, Atención de Salud , Calidad de la Atención de Salud , Encuestas y Cuestionarios , Tanzanía
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