National numbers of severe acute respiratory syndrome (SARS) cases continue to decline, but are beginning to grow again in some states, specifically in children (0-11 years).
The change is related to the circulation of the influenza virus (influenza) and the beginning of spring, according to the latest InfoGripe bulletin, from the Oswaldo Cruz Foundation (Fiocruz). The analysis, released yesterday (10), in Rio de Janeiro, rules out the possibility that the movement is linked to covid-19.
According to Fucruz, the influenza A virus developed in some states – Bahia, Goias, Minas Gerais, especially in São Paulo and the Federal District. The H3N2 subclassification was the most common, as seen in the November and December 2021 epidemic outbreaks.
InfoGripe coordinator Marcelo Gomez said the trend towards increased cases in the Federal District and São Paulo, two major hubs for interstate mobility, tends to affect other states.
In this scenario, although SARS-CoV-2 remains dominant among respiratory viruses, it still loses space among the main causes of hospitalization due to exacerbation of respiratory syndromes.
In the past 4 epidemiological weeks, the prevalence among cases with a positive result for respiratory viruses was 21.4% for influenza A; 1.2% for influenza B; 11.2% for respiratory syncytial virus (RSV); and 416% for Sars-CoV-2 (Covid-19).
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