Viruses exist, but people had the flu, just as in past years. Many were mistreated in hospitals. The flu and colds are very similar viruses.

I think you probably had the flu.

Luckily, I've never had the flu. I think I might be immune, as my father and grandfather never had it. In fact, my grandfather helped dress dead bodies at the funeral home during the 1917 Spanish flu. Everyone else was too afraid.