immunity

Is there a potential dead end for the Covid-19 contagion? Read here.

Dear Doctor: If I received the flu shot in September, am I still protected from the flu in March?   That's a very good question – and the answer depends, in part, on your current health. The flu season normally [...]

Dear Doctors: My daughter had the chicken pox vaccine as a child, so never had chicken pox. She’s now an adult. Should she get a booster? That’s an excellent question. The chicken pox (Varicella) vaccination has been widely used in the [...]