Results: 19

Respuesta inmunitaria al SARS-CoV-2 previa a la vacunación en personal de salud de Alto Paraná, Paraguay, un estudio seroepidemiológico

Rev. chil. infectol; 41 (2), 2024
INTRODUCCIÓN: La comprensión del comportamiento de la respuesta humoral en COVID-19 continúa siendo un desafío para la producción de vacunas que proporcionen inmunidad más duradera. OBJETIVO: Describir la respuesta humoral natural inducida por SARS- CoV-2 en personal de salud con base en el perfil ...

Coombs indireto com presença de anti-M IgM em uma gestante com fator Rh positivo – relato de caso

Femina; 52 (2), 2024
A aloimunização é caracterizada pela produção de anticorpos na vigência de ex- posição a antígenos não próprios, estando mais relacionada ao sistema ABO/Rh. Contudo, infrequentemente, a doença pode surgir por meio da exposição por antí- genos de outros sistemas sanguíneos, como o sistema ...

Prevalencia de anticuerpos de tipo IgG e IgM contra COVID-19 en personal municipal esencial en Ushuaia, Tierra del Fuego, Argentina
Prevalence of IgG e IgM antibodies against COVID-19 in essential municipal personnel. Ushuaia, T. del Fuego, Argentina

Actual. SIDA. infectol; 29 (105), 2021
Con el propósito de ampliar el conocimiento epidemiológico sobre la circulación del SARS-CoV-2 en la ciudad de Ushuaia durante el brote ocurrido de marzo a mayo de 2020, nos planteamos realizar un estudio observacional, de corte transversal, de mayo a jul...

Epitope of dengue virus E protein detect human antibodies associated with mild disease: a potential peptide for vaccine development

Braz. j. infect. dis; 24 (1), 2020
ABSTRACT The antigenic potential of seven immunogenic peptides of the dengue virus was evaluated in the sera of patients with dengue confirmed by IgM/IgG serology. Antibodies IgM and IgG against dengue virus peptides were analyzed by ELISA in 31 dengue sero-positive and 20 sero-negative patients. The P5 ...

Low risk of serological cross-reactivity between dengue and COVID-19

Mem. Inst. Oswaldo Cruz; 115 (), 2020
In the near future, the overlap of Coronavirus disease 2019 (COVID-19) and dengue epidemics is a concrete threat in tropical regions. Co-epidemics of COVID-19 and dengue could be an overwhelming challenge for health systems in low- and middle-income countries. In this work, we investigated potential sero...

The direct and indirect effects of the pneumococcal conjugated vaccine on carriage rates in children aged younger than 5 years in Latin America and the Caribbean: a systematic review

ABSTRACT Objective To demonstrate the impact of pneumococcal conjugate vaccine in Streptococcus pneumoniae carriage status in children younger than 5 years in Latin America and the Caribbean. Methods A systematic literature review was carried out on the direct and indirect effects of pneumococcal vac...

Performance evaluation of an indirect immunofluorescence kit for the serological diagnosis of dengue

ABSTRACT Objective: To evaluate the performance of indirect immunofluorescence for serological diagnosis of dengue virus in a population with high prevalence of arboviruses. Methods: Two-hundred serum samples from patients with clinical suspicion of dengue fever were tested by immunoenzymatic and indir...

Preliminary assessment of anti-α-Gal IgG and IgM levels in patients with patent Plasmodium vivax infection

Mem. Inst. Oswaldo Cruz; 114 (), 2019
Anti-α-Gal responses may exert a protective effect in falciparum malaria. However, the biological role of such antibodies is still unknown during Plasmodium vivax infections. We investigated IgG and IgM responses to α-Gal in individuals with vivax malaria. Anti-α-Gal IgG and IgM levels wer...

Prevalencia de la infección por Mycoplasma pneumoniae en pacientes pediátricos con exacerbación aguda del asma

Arch. argent. pediatr; 116 (3), 2018
Introducción. El Mycoplasma pneumoniae puede estar implicado en la exacerbación refractaria del asma, Objetivo. Establecer la prevalencia de la infección por Mycoplasma pneumoniae en pacientes con exacerbación aguda del asma. Material y método. Se realizó un estudio prospectivo, transversal, observ...

IgM ELISA for leptospirosis diagnosis: a systematic review and meta-analysis

Abstract A systematic review with meta-analysis was performed to estimate the accuracy of IgM ELISA for Leptospirosis diagnosis. A search of Medline, Lilacs, Embase, Cochrane Central Register of Controlled Trials and Grey literature (Google Scholar and British Library) was conducted. The medical subject ...