Publications by authors named "F M Malta"
Retrospective epidemiologic and genomic surveillance of arboviruses in 2023 in Brazil reveals high co-circulation of chikungunya and dengue viruses.
Augusto César Parreiras de Jesus Paula Luize Camargos Fonseca Hugo José Alves Diego Menezes Bonfim João Victor Rodrigues Dutra Frederico Scott Varella Malta
BMC Med
November 2024
Background: The rapid spread and increase of chikungunya (CHIKV) and dengue (DENV) cases in Brazilian regions in 2023 has raised concerns about the impact of arboviruses on public health. Epidemiological and genomic surveillance was performed to estimate the introduction and spread of CHIKV and DENV in Brazil.
Methods: This study obtained results from the Hermes Pardini (HP), a private medical laboratory, and the Health Department of Minas Gerais state (SES-MG).
Article Synopsis
- * In group 1 (44 patients with acute hepatitis A), 4% tested positive for HEV IgM and 14.5% for IgG, while in group 2 (47 patients with non-A-C AH), these rates were 4.3% for IgM and 14.9% for IgG; only one sample from group 2 tested positive for HEV RNA.
- * The findings suggest HEV should be considered in non-A-C acute hepatitis cases, particularly as one patient with HEV recently traveled to a high-serop
Article Synopsis
- - SARS-CoV-2 reinfections are occurring globally, with significant increases seen during the rise of the Omicron variant, prompting concerns about how often COVID-19 is being contracted a second time.
- - An analysis in Brazil from April 2020 to August 2022 identified 11,669 reinfection cases out of 324,979 confirmed COVID-19 cases, concentrated mainly in Minas Gerais, São Paulo, Rio de Janeiro, and Goiás.
- - The study found a reinfection rate of approximately 8%, highlighting two patterns: shorter reinfection intervals (up to 200 days) and longer ones (more than 500 days), indicating the changing dynamics of COVID-19 as new variants emerge.
Mortality in sea lions is associated with the introduction of the H5N1 clade 2.3.4.4b virus in Brazil October 2023: whole genome sequencing and phylogenetic analysis.
Andreina de Carvalho Araujo Andrew Yong Cho Laura Morais Nascimento Silva Thais Camilo Corrêa Gabriela Cristini de Souza Fernanda Malta
BMC Vet Res
July 2024
Clade 2.3.4.
View Article and Find Full Text PDFOur study identified strains of the A/H5N1 virus in analyzed samples of subsistence poultry, wild birds, and mammals, belonging to clade 2.3.4.
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