I am older than Grannie with more comorbidities. I am 86 and can't find a covid vacinne that works.
I am not anti vax, just got one for Tetanus a few weeks ago, after being in the hospital for a blood clot caused TIA.
I have had previously a TIA and two strokes caused by high blood pressure.
Nobody needs a vaccine for covid more than me, but none of them work. -Tom