Infants, young children, and adults older than 65 are most at risk for severe flu symptoms. The difference between influenza A and B, another type of flu virus, is that A is typically more common ...
It can affect adults and children but tends to be more severe in adults. Flu B only affects humans and, more commonly, infects children. While it usually has mild symptoms, it can have more severe ...
Compared to the flu, fever is rare, but low grade fevers can also occur, usually in older children and adults. "The signs and symptoms of a cold usually peak within 2 to 3 days of infection," the ...
Flu is a mild illness for some people. But for others, including older adults and those with chronic (long-lasting) health conditions, the flu can be very serious and even life-threatening.