Sure. Maybe there is a pre-existing condition. However, don't forget that there is also the theory that not everyone got the poisonous vaccine when they were doing the concentration camp jabbing in the cities.

So one guy got a placebo and the next mother of two got the shot that put her in bed for a month and ruined her health for the rest of her life (but it's better then getting covid of course don't forget because she'd hate to be wrong and have vaccinated/murdered her children, whom she forced to get the vaccine to triple down on the fact that she couldn't possibly be wrong. She did research and Fauci is a hero).

Russian Roulette: One tennis player gets the placebo, the next gets the shot. The thing is, sportsball players have to get the shot continuously and get tested continuously. They are inevitably going to collapse and die at some point.