In case you wondered …

… Is mandatory vaccination against COVID-19 precautionary? | Jaap C. Hanekamp. (Hat tip, Dave Lull.)

… a precautionary rush towards vaccinating the global population, even mandating such an operation, could well wreak havoc amongst the immunised.

I have nothing against vaccines. I've been vaccinated against tetanus and shingles. But I pass on the flu vaccine because (a) I've never had the flu and (b) flu vaccines are often out of date by the time they hit the market.  I don't seem to have caught Covid-19. Debbie has tested negative for it three times already and will be tested again on Friday.