Why does it take two weeks to develop antibodies to a vaccine?

Your question asks why it takes 2 weeks -- well often it takes a little longer to get high affinity antibodies, but it's really because the process of randomly acquiring mutations that create high affinity antibodies (a process called somatic hypermutation) is a random and not-error-free process. It happens, but it happens randomly. read more

Your question asks why it takes 2 weeks -- well often it takes a little longer to get high affinity antibodies, but it's really because the process of randomly acquiring mutations that create high affinity antibodies (a process called somatic hypermutation) is a random and not-error-free process. read more

It takes about two weeks after vaccination for antibodies to develop in the body that protect against flu. CDC recommends that people get a flu vaccine by the end of October, if possible. Getting vaccinated later, however, can still be beneficial and vaccination should continue to be offered throughout the flu season, even into January or later. read more

up vote 14 down vote favorite It is said that immunity from a flu vaccine appears after about two weeks. read more