COVID-19 vaccine will have to be at least 80 percent effective to achieve a complete ‘return to normal’: Model

Researchers around the world are racing to find a COVID-19 vaccine to eliminate the need for social distancing, mask wearing, and limits on interpersonal gatherings. In a new study, a computer simulation model found that if 75 percent of the population gets vaccinated, the vaccine has to have an efficacy (ability to protect against infection) [...]

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