Flu surges across U.S. as doctor visits reach highest level since 1997

CDC data show at least 11 million flu cases and 5,000 deaths as of Dec. 27, and 8.2% of outpatient visits were for flu-like illness—the highest rate recorded since 1997.

Flu activity in the United States has risen sharply, according to new Centers for Disease Control and Prevention data. The agency estimated at least 11 million flu cases as of Dec. 27, along with about 120,000 hospitalizations and 5,000 deaths. Outpatient visits for flu-like illness accounted for 8.2% of visits nationwide, the highest level the CDC has recorded since 1997. Officials also report that the H3N2 subtype of influenza A is widespread among recent specimens. Key points: - The CDC estimated at least 11 million flu cases, about 120,000 hospitalizations, and 5,000 deaths as of Dec. 27. - 8.2% of outpatient visits were for flu-like illness, the highest rate reported since 1997. - Of recent influenza A viruses subtyped, roughly 91% were identified as H3N2, the CDC reported. - The CDC announced updates to its recommended childhood vaccine schedule, and the American Academy of Pediatrics described those changes as "dangerous," according to reports. Summary: The CDC's data indicate widespread and rising flu activity across most U.S. jurisdictions, with elevated outpatient visits, hospitalizations, and deaths. The predominance of H3N2 is noted as a factor in this season's increase. Undetermined at this time.