COVID19 Vaccination : Beyond Million's

#Lancet says : 

Simple mathematics helps. If we 
vaccinated a population of 100 000 
and protected 95% of them, that would 
leave 5000 individuals diseased over 
3 months, Rather, a 95% vaccine efficacy means that instead of 1000 COVID-19 cases in a population of 100 000 Without Vaccine (from the placebo arm of the above mentioned trials, approximately 1% would be ill with COVID-19 and 99% would not) we would expect 50 cases (99·95% of the population is disease-free, atleast for 3 months) 
So this is only to save from Third Wave. 


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