‘Super flu’ virus tracker: Symptoms and latest update as subclade K influenza variant spreads
As many families are preparing to gather for the holidays, influenza (flu) cases are spiking across the country.
According to the latest data from the Centers for Disease Control and Prevention (CDC), positive test results have reached the highest levels seen so far this season.
The most frequently reported influenza virus this season is the influenza A H3N2 virus. Last week, Fast Company reported on a new mutated strain of influenza A H3N2, known as the subclade K flu variant, which emerged after multiple mutations. Here’s what you need to know.
According to CDC © Fast Company





















Toi Staff
Sabine Sterk
Penny S. Tee
Gideon Levy
Waka Ikeda
Grant Arthur Gochin