Based on weekly confirmed cases nationwide.

• Strain A

  Influenza Type A

  Includes the two most common subtypes of flu, H1N1 (swine flu), and H3N2 and is more likely to cause widespread outbreaks.

• Strain B

  Influenza Type B

  Typically accounts for about 26% of seasonal flu illnesses and is similar in severity to Type A. Type B is very contagious, but only affects humans, not animals.

Sources: Infectious Diseases Society of America, CDC

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  Protection At Your Fingertips - Frequent handwashing with soap and water is one of the simplest and most effective ways to prevent the spread of cold and flu viruses. Also, don’t forget to sanitize high-touch surfaces like phones, doorknobs, and keyboards.

• 

  Boost Your Defenses - Getting your flu shot early in the season gives your body time to build immunity before flu activity spikes. Flu vaccines are available at most local pharmacies, urgent care clinics, or through your primary care provider.

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  Forecast Your Wellness - Drops in temperature, low humidity, windy conditions, precipitation, and poor air quality can contribute to the spread of respiratory viruses. Weather patterns often signal when flu season is about to intensify- stay informed with flu forecasts and local weather updates.

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  Know The Numbers, Know The Risk - Monitoring flu case trends in your state and comparing them year-over-year can help you understand when and where risk is highest.

Historical flu cases reported by the CDC.

Source: Centers for Disease Control and Prevention