The flu vaccine may not be very effective this winter, according to U.S. health officials who worry this may lead to more serious illnesses and deaths.
The flu is proving fatal, and putting people in the hospital. Not so much children and the elderly, but rather, middle-aged adults.
With fall right around the corner, flu shots are too.
Flu activity is widespread across much of the country. And in the state of Pennsylvania, Allegheny County has the most cases.
The flu vaccine is designed to protect against the most commonly circulating strains of the virus expected in a given season.
The arrival of cooler temperatures means that flu season is approaching.
The arrival of cooler temperatures means that flu season is just around the corner.