Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Why do some vaccines require boosters (subsequent shots) and how is it determined how much time should pass between an initial vaccine and a booster?

April 26, 2017boosters initial pass require shots time vaccine vaccines

0

Posted

Why do some vaccines require boosters (subsequent shots) and how is it determined how much time should pass between an initial vaccine and a booster?

1 Answer

0

Posted

All of that is empirical: they are tested initially in various ways and their efficacy determined. In general we try to keep it as simple as possible, so most people will comply, even if another shot might add some protection.