1 month, 6 months and annually are common topics even in the mainstream news.

In Israel, which has vaccine heard Immunity to the original covid strain, over 70% of the new cases being the Indian variant in vaccinated people.

There is at least 4 known strains of the virus, you will be getting at least 4 booster shots filled with graphene, spike proteins and mRNA.

I personally would rather 100 flus and being sick for years over risking the side effects of the vaccine.