ugaboga232
Member
Influenza is an RNA virus that when they replicate genetic coding errors occur. This is what makes them extremely hard to have a good vaccine to cover and stop them.
The flu shot is trying to immunize the strain that the WHO has predicted to be the dominant strain that year. While they do their best to make the proper predictions, it won't account for a strain that was overlooked (or was thought was not going to be the major strain that year).
Also, since it takes about two weeks for antibodies to be formed in the body, you can still get sick from the strain it's meant to stop if you are already carrying it and just have not developed symptoms. This is also the reason that if you tell someone to get a flu shot before seeing your kid, and they do it the day before, it won't help. So I hope you told people to get the flu shot two weeks or more before they see your kid.
You should be getting shots, and people should be giving kids their shots, cause polio and smallpox aren't fun to have.
Ok the rapid evolution of the flu is not why we can't cure it (though it doesn't help). Its because it has non human reservoirs. We have non vaccine based treatments for Hep C which have an almost 100% cure rate and hep c is a highly mutating RNA virus.