importance of covid 19 vaccine, explain in 200 words
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COVID-19 vaccines help protect against severe illness with COVID-19 vaccine breakthrough cases. While COVID-19 vaccines are working well, some people who are fully vaccinated against COVID-19 will still get sick, because no vaccines are 100% effective.
In early May, the Pfizer-BioNTech vaccine was found to be more than 95% effective against severe disease or death from the Alpha variant (first detected in the United Kingdom) and the Beta variant (first identified in South Africa) in two studies based on real-world use of the ...
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