Conditions and Diseases
Swine Flu (H1N1/09)
Immune System

Does the H1N1 vaccine provide lifetime immunity?

User Avatar
Wiki User
2012-01-15 21:21:59

There are studies that suggest that over time the flu vaccines

can lose some effectiveness. This is partially due to the original

vaccine being less effective on mutated forms of the same virus.

But for the same exact strain of H1N1 that is in the vaccine, and

others that are very similar to it, many people do retain lifetime


One of the ways new viruses are created is through mutation of

existing viruses. If the H1N1/09 Pandemic Swine Flu virus mutates

to a strain that our immune systems do not detect as the same, then

the body would have to either be vaccinated with a new vaccine that

includes the new strain, or develop new immunity naturally by


Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.