A good friend of mine has done a lot of research on infectious diseases. An individual has immunity when the immune response is triggered. By definition. It wa

A good friend of mine has done a lot of research on infectious diseases. An individual has immunity when the immune response is triggered. By definition. It was very confusing to me at first before I caught on to the meaning of the term. It makes sense when you think about it. Can you "get" the virus a second time? Of course of can. That doesn't contradict the fact that you have some level of "immunity". After all, the immune response is a big part of what most of us feel when getting sick.