People who have had COVID-19 may require only single dose of two-dose vaccines
People who have previously been infected with COVID-19 may need only one dose of the two-dose mRNA vaccines to achieve maximum protection against the virus, a new UCLA study suggests. But all vaccinated individuals, whether previously infected or not, will likely require booster shots moving forward because antibodies created through both vaccines and natural infection wane at the same relatively rapid rate, the authors say.
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