NPR Flu season is off to a rough start this year, according to the Centers for Disease Control and Prevention. While the virus arrived as expected, cases are rising faster, compared with previous years.
Last week, more than 19,000 patients with influenza were admitted to hospitals, up about 10,000 from the previous week, according to new CDC data. To date, the CDC estimates at least 7.5 million people have been sickened, and over 3,100 people have died from the flu.
The surge seems to be driven primarily by a new strain of the virus — subclade K of influenza A(H3N2) — that emerged in Australia over the summer.