>People who have already had confirmed covid-19 might only need a single dose of a mRNA vaccine, two small studies have indicated.
Two weeks after a single dose of vaccine, people who had previously had covid-19 had antibody concentrations that were as high, or up to 10 times higher, than the levels seen in uninfected people who had received two doses of the vaccine.
"Since then, one study after another has reinforced the single-vaccine-for-survivors idea, though some skeptics have pointed out that it is logistically simpler to just give everyone two doses than to figure out who needs only one...Cheng at Cedars-Sinai said she would still default to the CDC guidance calling for two vaccines, even for people who have had COVID-19. The data does suggest, however, that one dose could be enough"
https://www.japantimes.co.jp/news/2021/04/18/world/coronavir...
The days after that I felt much worse that when I had the actual infection, albeit for a shorter time, so I personally would appreciate an official recommendation to not have to take the second dose.
I would have happily skipped the second Pfizer shot if the CDC said it was ok.