Covid-19: People who have had infection might only need one dose of mRNA vaccine
Article refers to two studies. One study in 109 people (pre-print, not yet peer reviewed) found that two weeks after a single dose of vaccine, those who had previously had covid-19 had antibody concentrations up to 10x higher than levels seen in uninfected people after 2 doses
Source:
British Medical Journal
SPS commentary:
The second study in 59 healthcare workers (also not yet peer reviewed), found that those who had previously been infected with SARS-CoV-2 had a clear antibody response, which peaked at 10 and 14 days after vaccination. At all time points, healthcare workers with previous infection showed statistically significantly higher antibody levels than those who hadn’t been infected.