The effects of the first three have pretty much worn off, and most people are as unprotected as if they’d never had one.
I’ve had Covid for the first time this week, and I’ve been not too ill, although I deadheaded half a rose bush yesterday, and that exhausted me so much I couldn’t finish it.
My CEV husband has it too, and despite being stuffed full of antivirals and prophylactic antibiotics, has an oximeter reading which is hovering just 2% above the level at which his doctor says we must call 999.
If you can have a booster safely, please do, for your own sake, and that of others.