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Key Points
• Seasonal influenza activity continues to increase across the country.
• Nationally, percent positivity for influenza, the percentage of emergency department visits for influenza, percentage of outpatient visits for respiratory illness, and the rate of influenza associated hospitalizations increased this week compared to last week.
• During Week 49, of the 621 viruses reported by public health laboratories, 603 were influenza A and 18 were influenza B. Of the 429 influenza A viruses subtyped during Week 49, 168 (39.2%) were influenza A(H1N1)pdm09 and 261 (60.8%) were A(H3N2).
• Two probable cases of influenza A(H5) virus were reported to CDC this week. To date, human-to-human transmission of influenza A(H5) virus has not been identified in the United States.
• No pediatric deaths associated with seasonal influenza virus infection were reported this week.
• CDC recommends that everyone ages 6 months and older get an annual influenza (flu) vaccine.1
• There are prescription flu antiviral drugs that can treat flu illness; those should be started as early as possible and are especially important for higher risk patients.2
• Influenza viruses are among several viruses contributing to respiratory disease activity. CDC is providing updated, integrated information about COVID-19, flu, and respiratory syncytial virus (RSV) activity on a weekly basis.
continued: https://www.cdc.gov/fluview/surveill...4-week-49.html
• Seasonal influenza activity continues to increase across the country.
• Nationally, percent positivity for influenza, the percentage of emergency department visits for influenza, percentage of outpatient visits for respiratory illness, and the rate of influenza associated hospitalizations increased this week compared to last week.
• During Week 49, of the 621 viruses reported by public health laboratories, 603 were influenza A and 18 were influenza B. Of the 429 influenza A viruses subtyped during Week 49, 168 (39.2%) were influenza A(H1N1)pdm09 and 261 (60.8%) were A(H3N2).
• Two probable cases of influenza A(H5) virus were reported to CDC this week. To date, human-to-human transmission of influenza A(H5) virus has not been identified in the United States.
• No pediatric deaths associated with seasonal influenza virus infection were reported this week.
• CDC recommends that everyone ages 6 months and older get an annual influenza (flu) vaccine.1
• There are prescription flu antiviral drugs that can treat flu illness; those should be started as early as possible and are especially important for higher risk patients.2
• Influenza viruses are among several viruses contributing to respiratory disease activity. CDC is providing updated, integrated information about COVID-19, flu, and respiratory syncytial virus (RSV) activity on a weekly basis.
continued: https://www.cdc.gov/fluview/surveill...4-week-49.html