RSV Season Starts Off Spotty

Across both prepandemic and pandemic years, the respiratory syncytial virus (RSV) outbreaks in the United States began in Florida, the southeast, and later in the north and west regions. 

Florida's RSV season is longer than the rest of the U.S. and has distinct regional patterns, says the U.S. Centers for Disease Control and Prevention (CDC).

The Florida Department of Health reported as of week #39, September 30, 2023, RSV activity was increasing with higher test positivity, hospital admissions, and emergency room rates, with three previous outbreaks but no current RSV outbreak. 

Furthermore, NREVSS data show Florida's PCR positivity 3-week moving average was about 7.7% as of September 28, 2023.

Globally, the World Health Organization (WHO) Influenza Update N° 454 indicates RSV activity was found to be generally low, except in some parts of Western Australia and some Central and temperate South American countries.

Additional WHO and CDC RSV outbreak data are posted at Precision Vaccinations.

As of October 4, 2023, RSV vaccines and monoclonal antibody therapies are available in the U.S.