In what is believed to be one of the largest studies of its kind, Johns Hopkins Medicine researchers have shown that antibody levels against SARS-CoV-2 (the COVID-19 virus) stay more durable that is, remain higher over an extended period of time in people who were infected by the virus and then received protection from two doses of messenger RNA (mRNA) vaccine compared with those who only got immunized.
People who got two doses of a COVID-19 vaccine following an earlier infection have higher antibody levels that last longer, a new Johns Hopkins Medicine study suggests.