Florida Flu Review; Week 4, 1-20-19 thru 1-26-19

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Influenza

Florida FLU REVIEW Season: 2018-19 Week 4: 1/20/19-1/26/19 Geographic Spread: Widespread Predominant Strain: A 2009 (H1N1) ILI Activity Trend: Increasing

Influenza & influenza-like illness (ILI) activity summary:

In week 4, ILI activity increased statewide but remained within levels observed at this time in past seasons. It is possible that ILI activity has peaked for the season in Florida but heightened activity is still expected for several more weeks.

Most counties reported mild influenza activity for week 4. Nine counties reported moderate influenza activity.

Eight new outbreaks of influenza or ILI were reported in week 4: four with laboratory evidence of influenza and four ILI. A total of 81 influenza or ILI outbreaks have been reported so far this season (see page 14). Of note, after further investigation, one event classified as an outbreak in last week’s report was determined to not meet the definition of an outbreak (see page 16 for outbreak definitions).

No new influenza-associated pediatric deaths were reported in week 4. Children, especially those with underlying medical conditions, are at higher risk for complications from influenza infection. Influenza vaccination can be life-saving in children. For more information, see page 10.

While influenza A 2009 (H1N1) remains the most common subtype identified at the Bureau of Public Health Laboratories in Florida, influenza A (H3) viruses continue to be consistently identified. Nationally, influenza A 2009 (H1N1) remains the predominant subtype overall; however, the Centers for Disease Control and Prevention reports influenza A (H3) as the predominant subtype in the southeastern region of the United States. Influenza vaccines are designed to protect against both influenza A 2009 (H1N1) and influenza A (H3) viruses.

It’s not too late to get your flu vaccine. People who have not yet been vaccinated for the 2018-19 season should do so as soon as possible. Influenza vaccines are safe and are the best way to protect yourself and your loved ones from influenza and its potentially severe complications.

In addition to getting vaccinated, the Florida Department of Health also recommends you take everyday precautions to prevent the spread of influenza and other respiratory viruses:

  • Wash your hands often with soap and water (if soap is not available, use an alcohol-based sanitizer)
  • Avoid touching your eyes, nose and mouth
  • If you do get sick, stay home until fever-free for at least 24 hours (without the use of fever-reducing medication)

View the full report for more information.

Influenza and ILI Outbreaks
Reported as of 1/26/19

Outbreak Map: Counties with outbreak(s) in week 4: Pinellas, Collier, Orange, Santa Rosa, St. Johns Counties with 0 outbreaks this season: Alachua, Baker, Bay, Bradford, Calhoun, Charlotte, Clay, Columbia, Dixie, Flagler, Franklin, Gadsden, Glades, Gulf, Hamilton, Hardee, Hendry, Hernando, Highlands, Holmes, Jackson, Jefferson, Lafayette, Leon, Levy, Liberty, Madison, Manatee, Marion, Monroe, Nassau, Okeechobee, Osceola, Seminole, Sumter, Suwannee, Taylor, Union, Wakulla, Walton, Washington Counties with 1-2 outbreaks this season: Santa Rosa, Brevard, Citrus, DeSoto, Gilchrist, Lee, Martin, Okaloosa, Polk, Sarasota, St. Johns, Broward, Duval, Palm Beach, Pasco, St. Lucie, Volusia Counties with 3-4 outbreaks this season: Lake, Orange, Escambia, Indian River, Putnam Counties with 5+ outbreaks this season:  Collier, Hillsborough, Miami-Dade, Pinellas Note: After further investigation, one event classified as an outbreak in last week’s report was determined not to meet the definition of an outbreak (see page 16 of the full-length report for outbreak definitions).

County Influenza Activity

Activity Level Map: No Activity: Gilchrist, Gulf, Hamilton, Highlands, Madison, Pasco Mild Activity: Alachua, Baker, Bay, Bradford, Brevard, Broward, Calhoun, Charlotte, Citrus, Clay, Collier, Columbia, Miami-Dade, DeSoto, Dixie, Duval, Escambia, Flagler, Gadsden, Glades, Hardee, Hendry, Hernando, Hillsborough, Holmes, Jackson, Jefferson, Lafayette, Lake, Lee, Leon, Levy, Liberty, Manatee, Martin, Monroe, Nassau, Okaloosa, Okeechobee, Palm Beach, Polk, Putnam, Santa Rosa, Sarasota, St. Johns, St. Lucie, Sumter, Taylor, Union, Volusia, Wakulla, Washington Moderate Activity: Franklin, Indian River, Marion, Orange, Osceola, Pinellas, Seminole, Suwannee, Walton Elevated Activity: None Unknown: None

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