"the challenge of confirming past infection" my fucking arse. Do an antibody test, it will tell you if someone has antibodies for a certain disease.

https://www.theage.com.au/sport/tennis/novak-djokovic-launches-court-bid-to-fight-deportation-20220106-p59mdp.html

"The current approved vaccines are" except that not a single one of them is actually APPROVED ffs.