According to the CDC, influenza levels across the United States have reached their peak since the 2009 swine flu pandemic, with nearly 8% of outpatient visits related to the virus. This winter's flu wave is notably more severe than in recent years. Current data shows that 31.6% of influenza tests returned positive, nearly double the peak from last season. Despite a smaller, declining wave of COVID-19, influenza cases are trending upward in 15 states, with overall respiratory illness rated as 'very high' this season.
Influenza infections are 'likely growing' in 15 states, the agency's disease forecasters predict, and are either now flat or starting to decline in most other states.
That is the worst on record in the CDC's influenza surveillance network since late 2009, during the swine flu pandemic.
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