Doctors alert: Flu is back. Here is what to know

After flu hit historically low levels during the Covid-19 pandemic, it may be poised for a comeback. The main clue: A nasty flu season just ended in Australia

Doctors alert: Flu is back. Here is what to know
After flu hit historically low levels during the Covid-19 pandemic, it may be poised for a comeback. The main clue: A nasty flu season just ended in Australia