(Photo Credit: E+/Getty Images) Three types of flu viruses affect humans: types A, B, and C. Type A and B cause the annual influenza epidemics that have up to 20% of the population sniffling ...

But, in general, "during the respiratory (virus) season, we tend to see A coming up earlier," Ray explains, "and then the tail of the epidemic tends to be influenza B." Whether you have influenza ...

There are more than 100 different Influenza A subtype combinations currently known. Influenza B viruses, however, typically change more slowly than Influenza A and only infect humans. Experts say ...