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Respiratory Syncytial Virus (RSV) in Florida

Florida Health

Disease Control

Respiratory Syncytial Virus Surveillance

Activity Summary

Weeks 31-32 ( July 26 - August 8, 2020 )

In weeks 31-32, RSV activity in children <5 years old decreased. Levels were below those seen at this time in past years.

No new outbreaks of RSV were reported in weeks 31-32.

Currently, two of Florida’s five regions are in RSV season.

In weeks 31-32, the percent of emergency department and urgent care center visits for RSV among children <5 years decreased. RSV activity in children <5 years was below levels observed at this time in previous years.

Image shows the percent of emergency department and urgent care center visits with discharge diagnoses that include respiratory syncytial virus (RSV) or RSV-associated illness among children <5 years 1 , as reported in ESSENCE-FL, week 30, 2016 to week 32, 2020. In weeks 31-32, RSV activity in children <5 years decreased and was below levels observed at this time in previous seasons.

In weeks 31-32, the percent of specimens testing positive for rhinovirus increased and was higher than other respiratory viruses under surveillance. Of note, a significant decrease in the volume of testing has been observed in previous weeks. This figure may change as additional data are received.

RSV Surveillance

Florida’s RSV season is longer than the rest of the nation and has distinct regional patterns. The RSV seasons shown here are based on activity thresholds provided by the Centers for Disease Control and Prevention.

The determination of unique seasonal and geographic trends of RSV activity in Florida has important implications for prescribing patterns for initiating prophylaxis to children at high risk for complications from RSV infection. The American Academy of Pediatrics currently recommends pre-approval for prophylactic treatment be made based on state surveillance data. For more information on RSV surveillance systems used in Florida, see the last page of this report.

An image of a map showing counties in Florida. Northwest Region, October- April: Escambia, Santa Rosa, Okaloosa, Bay, Washington, Holmes, Jackson, Calhoun, Gulf, Gadsden, Liberty, Franklin, Wakulla, Leon, Jefferson North Region, September-March: Madison, Taylor, Hamilton, Suwannee, Lafayette, Dixie, Levy, Alachua, Gilchrist, Union, Bradford, Columbia, Barker, Nassau, Duval, Clay, St. Johns, Putnam Central Region, August-March (currently in season): Citrus, Marion, Flagler, Volusia, Lake, Sumter, Citrus, Hernando, Pasco, Pinellas, Hillsborough, Osceola, Brevard, Orange, Seminole Southwest Region, September-April: Polk, Manatee, Hardee, Highlands, Okeechobee, Glades, Charlotte, Desoto, Sarasota, Lee, Hendry, Collier.  Southeast Region, January-December (currently in season): Indian River, St. Lucie, Martin, Palm Beach, Broward, Miami-Dade, Monroe.

Florida’s RSV regional season breakdown. Regions that are currently in RSV season are marked with pink stars.

*Note: This page contains materials in the Portable Document Format (PDF). The free Acrobat Reader may be required to view these files.