virus covid-19 vaccine

Are COVID-19 vaccine boosters the way forward?

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www.medicalnewstoday.com

growing evidence that people who have received COVID-19 vaccines are less likely to become infected with the virus that causes this disease and that if they do, they are less likely to have symptoms of severe illness.

However, evidence is also emerging that existing vaccines may offer less protection against new variants of SARS-CoV-2, such as the delta variant.

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