2 ms·
It’s a percentage reduction in risk. If a random unvaccinated person has a 10% chance of infection and a vaccinated person has a 1% chance of infection, the vac
by quantgenius 6y ago
It’s a percentage reduction in risk. If a random unvaccinated person has a 10% chance of infection and a vaccinated person has a 1% chance of infection, the vaccine is 90% effective.