RSV Found in the Americas and Australia

The World Health Organization (WHO) recently published Influenza Update N° 447, which presented data on the current respiratory syncytial virus (RSV) seasonality.

In the U.S., the 2022–23 RSV season it started later than during 2021–2022 but earlier than the prepandemic seasons, suggesting a return toward prepandemic seasonality. 

Across both prepandemic and pandemic years, RSV circulation in the U.S. began in Florida.

Globally, RSV activity was generally low except in Australia, and a few countries in the Region of the Americas reported the WHO on June 12, 2023.

RSV activity decreased to low levels in Central America and the Caribbeans while increasing in a few countries in tropical and temperate South America.

In South Africa, the RSV detection rate among children under five years of age in pneumonia surveillance remained at a low level.

As of June 17, 2023, RSV vaccines for adults and antibody therapy for infants are authorized in various countries.