Normally you won't have an incidence rate this high, therefore you need to run the trails for longer to get enough people in the control group sick. Massive amo

Normally you won't have an incidence rate this high, therefore you need to run the trails for longer to get enough people in the control group sick. Massive amounts of volunteers and a high prevalence made sound statistics possible in a relatively short amount of time. "Long term" side effects mean weeks or few month later, not years as many people assume. In the past things like rare autoimmune disease associated with vaccination appeared within weeks after the dose, but it may take years to pick up the statistical signal, which may explain this belief. There is literally no reason to assume the mRNA vaccines will cause side effects 5 years later or something.