$COCP [how long the vaccine & properties] [mutates][new strains][reinfected]
so shot good for one year ?????
re;
It's not really how long the vaccine works, that's not how it works.
It's how long until the disease,
virus or infection mutates to a new strain and you can be
re-infected again at that time,
which means you need another dose that has also changed with the mutation.
The common flu for instance is 1 year.
Some other viruses/diseases/infections are a few months, some are several years...others never mutate.
[i am told vitamin d-3 helps]