What Causes Recurrent Flu And Sinusitis Despite Taking A Flu Vaccine?
It reduces the severity.
Detailed Answer:
Welcome To HCM. I am Dr Anshul Varshney. I understand your concern.
Your are considering the concept of Flu vaccine in a wrong way. Actually Flu vaccine provided does you immunity against the particular strain for which you have been vaccinated. There are various Flu vaccines and most of them are directed against Influenza virus, the swine flu variants.
Common cold , flu can occur through a lot of types of viruses. The most dangerous amongst them is swine flu. So the vaccine protects you against that.
Moreover it's not that anyone who has got the shots won't ever get influenza infection.
In fact the vaccine reduces the severity of disease and complications by providing immunity. So it's mostly seen the the severity of that infection is low in the person who has received the vaccination.
I hops it helps you.
If you have any further query, please ask me.