Your browser doesn't support javascript.
loading
تبين: 20 | 50 | 100
النتائج 1 - 20 de 61
المحددات
1.
Organ Transplantation ; (6): 435-442, 2024.
مقالة ي صينى | WPRIM | ID: wpr-1016909

الملخص

<b>Objective</b> To investigate the long-term safety and effectiveness of withdrawal of hepatitis B immuneglobulin (HBIG) and/or nucleos(t)ide analogues (NAs) to prevent hepatitis B virus (HBV) reinfection in liver transplant recipients with hepatitis B-related diseases after successful vaccination. <b>Methods</b> Baseline data of 76 liver transplant recipients undergoing hepatitis B immune reconstitution after receiving hepatitis B vaccines were retrospectively analyzed. The vaccination and response, the follow-up results of respondents with HBIG and/or NAs withdrawal, and the reinfection of HBV after withdrawal of HBIG and/or NAs were analyzed. <b>Results</b> The time interval from liver transplantation to hepatitis B vaccination was 26 (20, 40) months. The time interval from vaccination to response was 15 (8,27) months. Initially, 76 recipients withdrew HBIG, and 36 recipients withdrew HBIG and NAs. During the follow-up, 12 of 76 recipients who withdrew HBIG resumed use of HBIG, and 16 of 36 recipients who withdrew HBIG and NAs resumed use of NAs. The withdrawal time of HBIG and NAs was 135 (98,150) and 133 (34,149) months, respectively. Sixteen respondents did not receive booster, and 36 respondents received boosters on a regular basis. The time interval between the first booster and HBIG withdrawal was 44 (11,87) months. No significant differences were observed in baseline data between the respondents with and without boosters (all <i>P</i>>0.05). During the follow-up, 9 recipients were lost to follow-up, 5 were re-infected with HBV, 3 died, and 1 recipient developed graft loss and underwent secondary liver transplantation. Among 5 recipients re-infected with HBV, 4 cases had virus mutation. Significant differences were found between re-infected and uninfected patients regarding withdrawal of NAs and hepatitis B e antigen (HBeAg) positive before transplantation (both <i>P</i><0.05). <b>Conclusions</b> Long-term withdrawal of HBIG is feasible and safe for recipients with successful hepatitis B immune reconstitution after liver transplantation for hepatitis B-related diseases. Nevertheless, whether antiviral drugs can be simultaneously withdrawn remains to be validated.

2.
مقالة ي صينى | WPRIM | ID: wpr-1020752

الملخص

Objective To analyze the frailty of patients with long-term maintenance dialysis(MD)and its influencing factors,and to explore the correlation of different dialysis modalities with the re-infection of novel coronavirus infection(COVID-19)and frailty syndrome.Methods Patients with regular dialysis in Nephrology Department of the Second Affiliated Hospital of Kunming Medical University from February to June 2023 were selected.A cross-sectional survey was conducted to collect clinical data of the patients,including dialysis modality(i.e.maintenance hemodialysis,abbreviated as hemodialysis,and continuous ambulatory peritoneal dialysis,abbreviated as peritoneal dialysis),and whether with re-infection of COVID-19.Patients were divided into 3 groups using Fried's frailty phenotype(FP):non-frailty group,pre-or-intermediate frailty group,and frailty syndrome group.The clinical characteristics of the FP were compared among the three groups.The correlation of frailty with clinical data,dialysis modality,re-infection of COVID-19 in each group was compared.Multifactorial logistic regression was used to analyze the factors influencing the development of frailty syndrome in patients.Results A total of 246 dialysis patients were included in this study,with 77(31.3%)in the non-frailty group,83(33.7%)in the pre-frailty group and 86(35.0%)in the frailty syndrome group.The frailty syndrome group showed characteristics of advanced age,high pre-dialysis creatinine level,low serum albumin level and combined pleural effusion(all P<0.05).There was no statistically significant difference in the comparison of frailty between the hemodialysis and peritoneal dialysis group(P = 0.960).COVID-19 re-positive patients had higher frailty score than non-re-positive patients.Multifactor logistic regression showed that age,COVID-19 re-infection of COVID-19,serum albumin,pre-dialysis creatinine,and pleural effusion were factors influencing the development of frailty syndrome in dialysis patients(P<0.05).Conclusion There is high incidence of frailty syndrome in dialysis patients,and there is no correlation of frailty with dialysis modality.High serum albumin level is a protective factor for the development of frailty syndrome in patients,whereas re-infection of COVID-19,advanced age,high pre-dialysis blood creatinine level and pleural effusion are risk factors for the development of frailty syndrome.

3.
مقالة ي صينى | WPRIM | ID: wpr-1016537

الملخص

ObjectiveTo identify the rate, population characteristics, and vaccination history of repeat infections among previously infected people in the current epidemic based on the rate of repeat infection and population characteristics of different mutant strains at different times in Pudong New Area of Shanghai, and to provide reference for the prevention and control strategies of novel coronavirus repeat infections. MethodsA total of 9 250 investigated subjects were randomly selected from the new cases of asymptomatic infection and confirmed cases reported by Pudong New Area from March to May 2022. The investigation mainly focused on demographic characteristics, nucleic acid or antigen test results, and symptoms after infection. The repeat infection rates among different populations were compared, and logistic regression was used to analyze the impact of gender, age, and vaccination status on repeat infections. ResultsThe survey sample of 9 250 people had a response rate of 81.85%. There were 4 043 males (53.40%) and 3 528 females (46.60%), with a median age of 34 years old (P25, P75: 7, 61). The overall vaccine uptake rate was 59.44% (4 500/7 571). In December of 2022, there were 563 cases of repeat infection, with an infection rate of 7.44%. The lowest rate of repeat infection was seen in the 3‒ year-old group (2.86%) and the highest rate in the 30‒ year-old group (12.42%), with significant differences between different age groups. The repeated infection rate for those who had completed their vaccinations was significantly lower (6.57%) compared to those who had not (7.11%). The age groups of 3‒ years, 70‒79 years, as well as individuals who completed full vaccination and received booster shots were protective factors against repeat infections. ConclusionThe overall rate of reinfection among the infected in Shanghai during the spring of 2022 was low in the outbreak of the Omicron variant, and the rate of reinfection in the 3‒ year-old group was significantly lower than in other age groups. Completing the full course of vaccination significantly reduces the risk of reinfection. Although the reinfection rate is high in individuals who received booster shots, it remains a mitigating factor compared to those who do not receive the vaccine. It is recommended to continue monitoring reinfections in key populations and further strengthen immunization efforts.

4.
مقالة ي صينى | WPRIM | ID: wpr-1016538

الملخص

ObjectiveTo describe the epidemic characteristics of COVID-19 after policy adjustment from “Category B notifiable disease with category A management” to “Category B notifiable disease with category B management”, and to explore the protective effect of previous infection with SARS-CoV-2 on common symptoms of reinfection. MethodsHealthcare workers infected with SARS-CoV-2 in a grade A tertiary hospital in Shanghai were included in the study from December 4, 2022 to January 11, 2023. Data on demographic characteristics, clinical symptoms, medical history, and COVID-19 vaccination history were collected. We determined the epidemiological curve and characteristics, and then compared the difference in the severity of clinical symptoms between primary and reinfection subjects. ResultsA total of 2 704 cases were included in the study, of which 45 had reinfection, 605 (22.4%)were males, 608 (22.5%)were doctors, 1 275 (47.2%) were nurses, and 2 351 (86.9%) received ≥3 doses of COVID-19 vaccination. The average age of these healthcare workers was (34.9±9.1) years old. The number of cases with mild/moderate illness, asymptomatic infection, fever, headache, dry cough, expectoration, and chest tightness were 2 704 (100.0%), 92 (3.4%), 2 385 (88.2%), 2 066 (76.4%), 1 642 (60.7%), 1 807 (66.8%), and 439 (16.2%), respectively. Reinfection was a protective factor for fever (OR=0.161, P<0.001), headache (OR=0.320, P<0.001), and peak body temperature (β=-0.446, P<0.001). ConclusionFollowing the COVID-19 policy adjustment as a category B notifiable disease, healthcare workers at a grade A tertiary hospital in Shanghai predominantly experiences mild to moderate COVID-19 symptoms. Reinfection results in milder clinical manifestations, with a lower proportion of being asymptomatic.

5.
Journal of Chinese Physician ; (12): 180-184, 2024.
مقالة ي صينى | WPRIM | ID: wpr-1026099

الملخص

Objective:To understand the clinical characteristics of novel coronavirus reinfection and explore the risk factors of novel coronavirus reinfection.Methods:The clinical data of 340 patients with novel coronavirus infection who were admitted to the Fever Clinic of Beijing Traditional Chinese Medicine, Capital Medical University from December 2022 to January 2023 were included. The general characteristics, basic diseases, clinical symptoms, and examination results of the first and second infections in the non repeated infection group, the repeated infection group, and the repeated infection group were compared. Binary logistic multivariate analysis was used to explore the risk factors of novel coronavirus reinfection.Results:In this study, 340 patients with novel coronavirus infection were included, 180 of whom were repeatedly infected. There was no statistically significant difference (all P>0.05) in terms of gender, age, body mass index (BMI), exercise, smoking, daily routine, and underlying disease between the recurrent infection group and the non recurrent infection group. However, the vaccination rate of the recurrent infection group was lower than that of the non recurrent infection group [80.0%(144/180) vs 88.0%(142/169), P<0.05]; In the repeated infection group, 157 cases (87.2%) were accompanied by overall discomfort (including headache, fatigue, muscle and joint pain), which was significantly higher than 122 cases (76.2%) in the non repeated infection group. The proportion of pneumonia occurring during the first infection was higher than that in the non repeated infection group [15.6%(28/180)], and the difference was statistically significant ( P<0.05). The interval between the first and second infections in the repeated infection group was (166.2±8.3)days. Cough and phlegm were the main clinical manifestations of two infections; The duration of re infection was shorter than that of the first infection [(7.03±2.30)days vs (8.94±3.02)days, t=6.739, P<0.001]; Secondary infections had less incidence of pneumonia [5.0%(9/180) vs 15.6%(28/180), χ 2=10.874, P=0.001]; 153 patients (85.0%) reported milder secondary infections. The results of binary logistic regression showed that cough, expectoration, body discomfort and pneumonia during the first infection were risk factors for repeated infection of novel coronavirus ( OR=2.710, 2.293, 2.808, P<0.05), and vaccination was a protective factor to avoid repeated infection ( OR=0.470, P=0.019). Conclusions:The symptoms of novel coronavirus reinfection are generally mild and the course of disease is relatively short. For vulnerable people, novel coronavirus vaccine should be actively inoculated to strengthen protection.

6.
Arch. argent. pediatr ; 121(6): e202202893, dic. 2023. tab
مقالة ي الانجليزية, الأسبانية | LILACS, BINACIS | ID: biblio-1518725

الملخص

El síndrome inflamatorio multisistémico pediátrico (MIS-C, por su sigla en inglés) es una enfermedad rara. Se desconoce si los niños que se recuperaron del MIS-C tienen riesgo de recurrencia de MIS-C cuando presentan reinfección por SARS-CoV-2. El objetivo de este estudio es describir los casos de dos niñas que se recuperaron del MIS-C y presentaron reinfección por SARS-CoV-2 sin recurrencia de MIS-C.


Multisystem inflammatory syndrome in children (MIS-C) is a rare condition. It is still unknown if children who have recovered from MIS-C are at a risk of recurrence of MIS-C when they are reinfected with SARS-CoV-2. In this study, we aimed to report 2 children who recovered from MIS-C and reinfected with SARS-CoV-2 without recurrence of MIS-C.


الموضوعات
Humans , Female , Child , SARS-CoV-2 , COVID-19/complications , Systemic Inflammatory Response Syndrome/diagnosis , Systemic Inflammatory Response Syndrome/therapy
7.
Bol. venez. infectol ; 34(2): 69-78, julio-diciembre 2023.
مقالة ي الأسبانية | LILACS-Express | LILACS | ID: biblio-1571443

الملخص

Introducción: La pandemia de COVID-19 afectó significativamente al personal de salud, los estudiantes de medicina tuvieron alta exposición a la infección y reinfección. El objeto del estudio fue determinar la infección y reinfección por SARS-Cov-2 y la cobertura vacunal en los estudiantes de medicina de 1ro a 6to año en el período de enero-febrero 2023. Metodología: Estudio de corte transversal por encuesta vía electrónica. Muestra aleatoria polietápica por azar simple y conglomerados estratificados por nivel académico. Proyecto avalado por La Comisión Nacional de Bioética. Resultados: Se recolectaron 224 respuestas, reportando 334 episodios de infección por SARS-CoV-2, 19 % presentó al menos un episodio de infección en 2020, 40 % en 2021 y 41 % en 2022. El 75,4 % reportó haber estado infectado y reinfectado; de estos, el 70 % presentó entre 2 y 5 reinfecciones. En el 37 % de los episodios se confirmó, por reacción en cadena polimerasa (PCR, por sus siglas en inglés) o prueba de antígenos. Los estudiantes de internado rotatorio y 5to año se infectaron más que los de 1ro a 3er año (p= 0,0037). La vacunación alcanzó 96 % de los estudiantes, la mayoría recibió 2 o más dosis de refuerzo, los alumnos de 4to a 6to año con un número mayor de dosis (p= 0,0067). Las hospitalizaciones fueron bajas 4 %. Conclusiones: las infecciones y reinfecciones son frecuentes en los estudiantes de medicina; la mayoría no presenta complicaciones graves, los estudiantes del área clínica están más expuestos y están mayormente vacunados, que los estudiantes de preclínica.


Introduction: The COVID-19 pandemic significantly impacted healthcare personnel, with medical students having high exposure to infection and reinfection. The study aimed to determine the infection and reinfection rates of SARS-CoV-2 and the vaccination coverage among medical students from 1st to 6th year during the period of January-February 2023. Methodology: This was a cross-sectional study using an electronic survey. A multi-stage random sample was taken with simple random sampling and clusters stratified by academic level. The project was approved by the National Bioethics Commission. Results: A total of 224 responses were collected, reporting 334 episodes of SARS-CoV-2 infection. Nineteen percent reported at least one episode of infection in 2020, 40 % in 2021, and 41 % in 2022. Seventy-five point four percent reported having been infected and reinfected; of these, 70 % had between 2 and 5 reinfections. In 37 % of the episodes, the infection was confirmed by polymerase chain reaction (PCR) or antigen test. Internship students and 5th-year students were more infected than those in 1st to 3rd year (p=0.0037). Vaccination coverage reached 96 % of the students, with most receiving 2 or more booster doses; students in the 4th to 6th years had a higher number of doses (p=0.0067). Hospitalizations were low at 4 %. Conclusions: Infections and reinfections are frequent among medical students; most do not present severe complications. Clinical area students are more exposed to infection and are more vaccinated compared to preclinical students.

8.
مقالة | IMSEAR | ID: sea-227351

الملخص

Background: Reinfection rates due to Covid-19 is on a rise. Prevention, identification, and management of these patients will be essential to reduce morbidity and mortality. Objective of this study was to determine the proportion of SARS COV-2 reinfection among health care workers, to determine the meantime interval between primary infection and reinfection and to compare the symptomatology during Primary infection and reinfection. Methods: A descriptive study was conducted among healthcare workers who tested positive for COVID-19 from 1st July 2020 to 31st October 2021 which accounted for 704, of which 36 met the criteria for reinfection. Details of the health care workers who tested positive for COVID-19 was collected from regional PEID cell data base. Data was collected from study subjects using telephonic interviews. Data was analyzed using SPPSS Version 21. Results: Out of the 704 study subjects, 36 (5.11%) met the criteria for reinfection. Mean age was 29.6±9.7 years. Of the 36 cases of reinfection, 36.1% were asymptomatic during the primary infection compared to 2.8% during the second one. Cough and fever were present in 41.7% and 83.3% respectively during reinfection compared to 11.1% and 33.3% in primary infection. Mean time interval between primary infection and reinfection was 244.6±75.6 days. During the time period between primary infection and reinfection 4 (11.1%) had symptoms. Conclusions: Reinfection is possible in individuals who had primary infection with COVID-19. Reinfection can be symptomatically more severe. So regardless of history of infection with COVID-19 all individuals must strictly adhere to Covid protocol.

9.
مقالة ي صينى | WPRIM | ID: wpr-1003813

الملخص

ObjectiveTo investigate the incidence and severity of COVID-19 reinfection. MethodsWe searched relevant studies on COVID-19 reinfection, including cohort study, case report, and cross-sectional study in PubMed, Embase, CNKI and Wanfang databases. Revman5.3.0 was used for statistical analysis. ResultsA total of 52 studies in 19 countries were included. These literatures showed moderate and high quality. Furthermore, the pooled incidence of COVID-19 reinfection was estimated to be 1.9%(95%CI: 0.9%‒4.7%, P<0.01), pooled incidence of reinfection among medical workers in hospitals and staff in nursing home was 13.8%(95%CI: 4.8%‒34.2%, P<0.01), and pooled incidence of critical reinfection was 17.3%(95%CI: 11.5%‒25.9%, P<0.01).Sensitivity and publication bias analysis showed that the pooled incidence was stable and no publication bias was identified. ConclusionIncidence and severity of COVID-19 reinfection are both high. Although the prevention and control policy against COVID-19 has been adjusted in China, the public should pay attention to taking protective measures to avoid the reinfection.

10.
Journal of Clinical Hepatology ; (12): 1424-1430, 2023.
مقالة ي صينى | WPRIM | ID: wpr-978803

الملخص

In recent years, monotherapy and combination therapy with immune checkpoint inhibitors (ICIs) have achieved good efficacy in a variety of malignancies from solid tumors to lymphomas and have become a standardized and systematic treatment modality for many cancers. However, there is still a lack of studies on the safety of ICIs in hepatitis B virus (HBV)-infected patients with malignancies, and early studies have reported HBV reactivation due to ICI antitumor therapy in clinical practice. With reference to related literature, this article reviews the recent clinical trials and application of ICIs in cancer patients with chronic viral infection and clarifies the efficacy and safety of ICIs in this special population, in order to provide a reference for clinical medication.

11.
Clin. biomed. res ; 43(1): 90-91, 2023.
مقالة ي الانجليزية | LILACS | ID: biblio-1436255

الملخص

Rare cases of suspected COVID-19 reactivation have been reported. Reactivation is defined by two positive real-time RT-PCR results for the SARS-CoV-2 virus, with an interval equal to or greater than 90 days between two episodes of COVID-19. A nurse, started with COVID-19 symptoms in July 2020 and a RT-PCR SARS-CoV-2 confirmed the diagnosis. In November 2020, more than 4 months later, she developed a new episode of COVID-19 confirmed by a second RT-PCR SARS-CoV-2. The patient received a first dose of CoronaVac ­ (Sinovac/Butantan) in January 2021 and a second dose in February 2021, but 30 days after a third episode was confirmed. Contrary to what happens with many infectious diseases which generate antibodies and protect people from future episodes, this aspect is still not clear in relation to COVID-19. In addition to vaccination, the use of Personal Protective Equipment is essential for healthcare workers.


الموضوعات
Humans , Female , Reinfection/prevention & control , SARS-CoV-2/immunology , COVID-19/immunology , COVID-19/prevention & control , COVID-19 Serological Testing
12.
Rev. colomb. gastroenterol ; 37(4): 434-443, oct.-dic. 2022. tab, graf
مقالة ي الأسبانية | LILACS-Express | LILACS | ID: biblio-1423839

الملخص

Resumen La infección crónica por el virus de la hepatitis C (VHC) afecta a 58 millones de personas y es una importante causa de morbimortalidad alrededor del mundo. La reinfección por VHC es un problema creciente en personas con factores de riesgo como consumo pesado de alcohol, sexo anal, sexo grupal y compartir agujas y jeringas; este tipo de infección se define como un nuevo contagio de VHC con un genotipo viral diferente al de la primera infección en un paciente luego de lograr una respuesta viral sostenida (RVS). La reinfección se presenta, en parte, debido a la ausencia de estrategias de promoción y prevención. Teniendo en cuenta estos antecedentes, se han propuesto estrategias más pragmáticas para controlar la infección por VHC y evitar la reinfección, tales como la microeliminación. En el presente artículo se presenta un caso de un paciente que presenta alteración en los marcadores de la bioquímica hepática, por lo que se solicita una prueba diagnóstica de infección por VHC y luego genotipificación viral, y se evidenció una infección por VHC genotipo 1, subgenotipo 1A. Se inició el manejo con antivirales de acción directa y se documentó una adecuada RVS12. Tres meses después el paciente regresó a consulta y en los exámenes de control se evidenció una carga viral elevada de VHC, por lo que se solicitó genotipificación y se demostró una nueva infección por VHC genotipo 4.


Abstract Chronic hepatitis C (HCV) infection affects 58 million people and is a significant cause of morbidity and mortality worldwide. HCV reinfection is a growing problem in people with risk factors such as heavy alcohol use, anal sex, group sex, and sharing needles and syringes. This type of infection is defined as a new HCV infection with a different viral genotype than the first infection in a patient after achieving a sustained viral response (SVR). Reinfection occurs, in part, due to the absence of promotion and prevention strategies. Taking this background into account, more pragmatic approaches have been proposed to control HCV infection and avoid reinfection, such as micro elimination. This article reports the case of a patient with alterations in biochemical liver markers, for which a diagnostic test for HCV infection and then viral genotyping was requested. Infection by HCV genotype 1, subgenotype 1A, was evidenced. Management with direct-acting antivirals was started, and an adequate SVR12 was documented. Three months later, the patient returned, and the control tests showed a high HCV viral load, for which genotyping was requested, showing a new HCV genotype 4 infection.

13.
Rev. invest. clín ; Rev. invest. clín;74(4): 175-180, Jul.-Aug. 2022. tab, graf
مقالة ي الانجليزية | LILACS-Express | LILACS | ID: biblio-1409579

الملخص

ABSTRACT Background: Relatively low SARS-CoV-2 reinfection rates have been reported in vaccinated individuals, but updates considering the Omicron variant are lacking. Objective: The objective of the study was to provide a current estimate of the SARS-CoV-2 reinfection rate in a highly immunized population. Methods: A prospective cohort of Mexican hospital workers was followed (March 2020-February 2022). Reinfection was defined as the occurrence of two or more episodes of COVID-19 separated by a period of ≥ 90 days without symptoms. The reinfection rate was calculated as the number of reinfection episodes per 100,000 persons per day. Results: A total of 3732 medical consultations were provided to 2700 workers, of whom 1388 (51.4%) were confirmed COVID-19 cases. A total of 73 reinfection cases were identified, of whom 71 (97.3%) had completed their primary vaccination series and 22 (30.1%) had had a booster dose before the second episode. The overall reinfection rate was 23.1 per 100,000 persons per day (as compared to a rate of 1.9 per 100,000 persons per day before the Omicron wave). Conclusions: The SARS-CoV-2 reinfection rate rose significantly during the Omicron wave despite a high primary vaccination coverage rate. Almost one-third of reinfected workers had a vaccine booster ≥ 14 days before the last COVID-19 episode.

14.
Arch. argent. pediatr ; 120(3): e147-e150, junio 2022.
مقالة ي الأسبانية | LILACS, BINACIS | ID: biblio-1370740

الملخص

El síndrome inflamatorio multisistémico en niños y adolescentes relacionado temporalmente con la COVID-19 (SIM-C) es una entidad poco frecuente en pediatría, que emerge en relación con la pandemia por el coronavirus de tipo 2 causante del síndrome respiratorio agudo grave (SARS-CoV-2) y fue descripto por primera vez en mayo de 2020. Debido al escaso tiempo de evolución de esta enfermedad, hay aspectos sobre su fisiopatología, pronóstico y posibilidad de recurrencia, que aún se desconocen. Se presenta el caso clínico de un paciente de 12 años que cursó un cuadro compatible con SIM-C en enero de 2021, con buena evolución clínica posterior. Luego presentó una reinfección por SARS-CoV-2 a los 5 meses de la infección inicial (junio de 2021), con síntomas leves y sin recurrencia del SIM-C.


The multisystem inflammatory syndrome in children temporally related to COVID-19 (MIS-C) is a rare disease in pediatrics, which emerges related to the SARS-CoV-2 pandemic and was initially described in May 2020. Given the short time of evolution of this disease, little is known about the pathophysiology, prognosis, and the possibility of recurrence. We present a clinical case of a 12-year-old patient who presented symptoms compatible with MIS-C in January 2021, with good subsequent clinical evolution. He developed reinfection by SARS-CoV-2 at five months later (June 2021), with mild symptoms and without recurrence of MIS-C


الموضوعات
Humans , Male , Child , SARS-CoV-2 , COVID-19/complications , COVID-19/diagnosis , Systemic Inflammatory Response Syndrome , Pandemics , Reinfection
15.
مقالة ي الأسبانية | LILACS-Express | LILACS | ID: biblio-1398246

الملخص

Señor editor: La infección por SARS-CoV-2 ha ocasionado gran impacto en todo el mundo estimándose en más de 439 millones de casos y más de 5,9 millones de muertes. El Perú ha sido uno de los países en donde la mortalidad de su población ha descrito cifras muy elevadas llegando hasta una tasa de letalidad de 9.14%. Iquitos ha sido una de las ciudades más afectadas desde el inicio de la pandemia en el Perú, en donde se describió una seroprevalencia COVID-19 de 70% una de las más altas reportadas después de la primera ola pandémica de COVID-19. Es de esperar que esta seroprevalencia haya aumentado luego de la segunda ola. La duración de la inmunidad frente al SARS-CoV-2 ya sea por infección previa o por vacunación efectiva continúa siendo una de las interrogantes más importantes, en ese contexto, reportamos 4 casos de reinfecciones confirmadas en Iquitos Perú.


Dear Editor: SARS-CoV-2 infection has caused great impact worldwide, estimated at more than 439 million cases and more than 5.9 million deaths. Peru has been one of the countries where the mortality of its population has described very high figures reaching a case fatality rate of 9.14%. Iquitos has been one of the most affected cities since the beginning of the pandemic in Peru, where a COVID-19 seroprevalence of 70% was described, one of the highest reported after the first COVID-19 pandemic wave. It is to be expected that this seroprevalence has increased after the second wave. The duration of immunity against SARS-CoV-2 either by previous infection or by effective vaccination continues to be one of the most important questions, in that context, we report 4 cases of confirm reinfections in Iquitos Peru.

16.
مقالة | IMSEAR | ID: sea-217258

الملخص

Introduction: Vaccination against Covid-19 has become the promising strategy in controlling rise in Covid cases. Covishield and Covaxin were the two vaccines initially available in India which have been administered to all those >18years of age. These vaccines exhibit a spectrum of side effects, which may affect vaccination rates. The study was conducted to estimate the frequency of side effects of Covid vaccines in India and their relationship with co-morbidities and prior Covid-19 infection. Methodology: A cross sectional questionnaire-based online survey was conducted for duration of one month among 1800 participants who had received at least one dose of Covid vaccine at KIMS Hospital, Hubballi, Karnataka, selected using systematic random sampling and information about vaccination, comorbidities and covid infection after vaccination was collected. Results: The most common side effects were fever, headache and generalised body ache. The prevalence of infection after complete vaccination with Covishield (4.45%) was higher than Covaxin (1.08%) and difference was statistically significant. The prevalence of side effects and Covid-19 infection after vaccination did not vary with co-morbidities. Conclusion: The side effects reported were not serious and the prevalence was similar in both the vaccines. The prevalence of infection still remains high after vaccination; hence Covid Appropriate Behaviour should be continued.

17.
Tropical Biomedicine ; : 402-411, 2022.
مقالة ي الانجليزية | WPRIM | ID: wpr-960356

الملخص

@#Demarginalization through initiation of resettlement program since 1978 is an inevitable progress faced by the indigenous Orang Asli (OA) population in Peninsular Malaysia. As Malaysian huntergatherers, the Negrito has been exposed to various environmental-cultural variations. These changes may influence the pattern of soil-transmitted helminth (STH) infections, the common malady amongst OA. This study evaluated the deworming effects of single-dosage albendazole (400 mg) and STH-reinfection rate between Negritos who are still living in the inland jungle versus those living in resettlements at town peripheries (RPS). Stool samples from the consented participants were first examined using the direct faecal smear, formalin-ether sedimentation and Kato Katz techniques. Subsequently, stool collections were carried out in three time points following treatment (i.e., 21 days, 3 months and 6 months). In brief, a total number of 54 Negritos (inland: 24; RPS: 30) with a complete set of stool collection was included in this longitudinal study. This study revealed 72.2% cure rate against T. trichiura in the inland but only 15.0% in the RPS. Although the efficacy of albendazole against T. trichiura was ultimately low in the RPS, 62.6% egg reduction rate (ERR) (arithmetic mean) was noted (p = 0.001). For A. lumbricoides and hookworm, high cure rates were found in both communities (85.7–100.0%). Reinfection for T. trichiura was seen in less than 1 month with higher rate in the RPS (90.0%) as opposed to the inland (44.4%) at 21 days following treatment. This study found that the inland OA had better tolerability to single-dosage albendazole and experienced slower STH reinfection rates versus the RPS. Hence, the selection of albendazole dosage should be targeted and the use of single- dosage albendazole (biannually) would be more suitable for the inland OA. Conversely, we propose the use of 3-days albendazole regimens in the resettled RPS population.

18.
مقالة ي صينى | WPRIM | ID: wpr-951048

الملخص

Objective: To identify effects of various nationwide vaccination protocols on the evolution of new SARS-CoV-2 infections among adult population and to evaluate the safety of mRNA (BioNTech/ Pfizer) vaccine. Methods: Totally 10 735 adult volunteers that received at least one dose of BioNTech/Pfizer or triple doses of CoronaVac participated in this cross-sectional-online survey between 1 and 10 September 2021. The information was collected covering a 5-month period from April 2021 to September 2021. Information about people who were vaccinated with only single and double dose CoronaVac were not included in this study. Results: At least one side effect after single and double dose of BioNTech/Pfizer and triple doses of CoronaVac were observed in 42.1%, 42.5% and 10.9%, respectively. The most common side effects were shoulder/arm pain, weakness/fatigue, muscle/joint pain and headache. The side effects were the most frequent in single BioNTech/Pfizer, while it was the least in triple CoronaVac. The rate of positive PCR tests before vaccination was 17.6%, and decreased to 3.0% after vaccination. The rates of positive SARS CoV-2-PCR were 18.8%, 3.5%, 3.1%, 0.5% and 4.6% in single BioNTech/Pfizer, double BioNTech/Pfizer, double CoronaVac+single BioNTech/Pfizer, double CoronaVac+double BioNTech/Pfizer and triple CoronaVac, respectively. While 1.8% of PCR positive COVID-19 cases needed intensive unit care in the pre-vaccination period, intensive care unit was required in 0%, 1.5%, 2.4%, 0% and 4.2% after single BioNTech/ Pfizer, double BioNTech/Pfizer, double CoronaVac+single BioNTech/ Pfizer, double CoronaVac+double BioNTech/Pfizer and triple CoronaVac, respectively. Reinfection rate after vaccination was 0.4%. Conclusions: The rarity of COVID-19 infection after vaccination suggests that efficacy of vaccines is maintained. On the other hand, the data underscore the critical importance of continued public health mitigation.

19.
Rev. bras. cir. cardiovasc ; Rev. bras. cir. cardiovasc;36(5): 614-622, Sept.-Oct. 2021. tab, graf
مقالة ي الانجليزية | LILACS | ID: biblio-1351650

الملخص

Abstract Introduction: Destructive aortic root endocarditis is associated with high mortality rates. The objective of this article was to characterize the clinical and microbiological profiles of these patients, especially concerning an already implanted aortic valve prosthesis. We also focused on prognostic factors. Methods: Eighty patients underwent aortic root replacement due to destructive endocarditis from 1999 to 2018 in our institution. We analyzed their pre, intra, and postoperative data, outcomes, and predictors of mortality. Results: Thirty-one patients had native valve endocarditis (NVE), eight patients had early-onset prosthetic valve endocarditis (PVE), and 41 patients had late-onset PVE. Streptococcus was found in 19.4% of NVE cases and no PVE case. Coagulase-negative Staphylococcus was responsible for 62.5% of the cases of early-onset PVE. Thirty-four (42.5%) patients had received inappropriate antibiotics before admission. No microorganism was associated with higher risk of mortality. Aortoventricular dehiscence was identified as an independent risk factor of mortality along with PVE, concomitant bypass surgery, and delayed diagnosis. The incidence of postoperative complications was similar in all three groups. Rates of long-term survival (P=0.044) and freedom from the composite endpoint (P=0.024) defined as death, stroke, aortic valve reinfection, and aortic valve reoperation were the lowest within the NVE group and the highest among the PVE patients. Conclusion: In endocarditis, prolonged diagnostics, inadequate antimicrobial treatment, and late surgery led to destructive local complications and worsened the prognosis. PVE is associated with higher mortality than NVE.


الموضوعات
Humans , Heart Valve Prosthesis/adverse effects , Prosthesis-Related Infections/surgery , Heart Valve Prosthesis Implantation/adverse effects , Endocarditis, Bacterial/surgery , Aortic Valve
20.
Rev. chil. infectol ; Rev. chil. infectol;38(4): 564-567, ago. 2021. ilus
مقالة ي الأسبانية | LILACS | ID: biblio-1388273

الملخص

Resumen La inmunidad conferida luego de una primera infección por SARS-CoV-2 y el riesgo consiguiente de infección persistente o reinfección no están completamente dilucidados. Existen reportes internacionales de casos de reinfección, incluyendo el primer caso publicado en Sudamérica. Por otra parte, las comunicaciones de casos de coinfecciones han ido en aumento, incluyendo las asociadas a Legionella pneumophila . Presentamos el caso de un varón de 47 años de edad, personal de salud, que luego de cuatro meses de una primera infección por SARS-CoV-2, presenta una neumonía grave, certificándose una nueva infección por SARS-CoV-2 y una coinfección por L. pneumophila mediante detección de antígeno urinario. Fue tratado en UCI, requiriendo ventilación mecánica, dexametaxona y moxifloxacino, con buena respuesta clínica. Actualmente se encuentra en rehabilitación respiratoria y motora.


Abstract The immunity conferred after a first SARS-CoV-2 infection and the consequent risk of persistent infection or reinfection are not fully elucidated. There are reports both in Europe and in North America of reinfection cases, recently highlighting the first case published in South America. On the other hand, reports of co-infections have been increasing, including those associated with Legionella pneumophila . We present the case of a 47-year-old male, health personnel who, after four months of a first SARS-CoV-2 infection, suffers a severe pneumonia certifying a new SARS-CoV-2 infection and a L. pneumophila co-infection by urinary antigen detection. He was treated in the ICU, requiring mechanical ventilation, dexamethasone, and moxifloxacin, with a good response. He is currently in respiratory and motor rehabilitation.


الموضوعات
Humans , Male , Middle Aged , Legionnaires' Disease/complications , Coinfection , COVID-19/complications , Legionella pneumophila , Reinfection , SARS-CoV-2
اختيار الاستشهادات
تفاصيل البحث