Does the H1N1 vaccine provide lifetime immunity?
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