How can my wife get the flu and I am fine? Or Vice-versa?

Question

I understand immunity but from my understanding, the influenza virus changes pretty quickly.

How can I be in close proximity to my wife and not catch a flu that puts her down for 3 days? Or when I get a flu where I feel like I’m dying she is fine?

In: Biology

Answer 1

If you are careful to wash your hands and keep infected things from your mucous membranes, then your chances of exposure are reduced. When you don’t know someone is infected, you don’t always take the necessary precautions.