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There's some evidence that a second dose of mRNA vaccine isn't necessary if you were infected with Covid. >People who have already had confirmed covid-19 might

There's some evidence that a second dose of mRNA vaccine isn't necessary if you were infected with Covid. >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. https://www.bmj.com/content/372/bmj.n308 https://www.bmj.com/content/372/bmj.n308

leesalminen 5y ago
This HN user [0] has an anecdote to challenge this evidence. [0] https://news.ycombinator.com/item?id=27315459 https://news.ycombinator.com/item?id=27315459
- GeekyBear 5y ago
  How does that challenge this evidence?
cableshaft 5y ago
This is important when vaccine supplies are limited (in some places in the world that's the case), but not if they aren't. "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/coronavirus-vaccine-doses/ https://www.japantimes.co.jp/news/2021/04/18/world/coronavir...
- moses-palmer 5y ago
  I think supply is not the only thing to consider. I suffered a SARS-CoV-2 infection around Easter, and received my first vaccine dose a week ago. 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.
hellbannedguy 5y ago
There was a similar, or same study published by Nature I saw here a few weeks ago. I would have happily skipped the second Pfizer shot if the CDC said it was ok.

leesalminen 5y ago

This HN user [0] has an anecdote to challenge this evidence. [0] https://news.ycombinator.com/item?id=27315459 https://news.ycombinator.com/item?id=27315459

GeekyBear 5y ago
How does that challenge this evidence?

cableshaft 5y ago

This is important when vaccine supplies are limited (in some places in the world that's the case), but not if they aren't. "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/coronavirus-vaccine-doses/ https://www.japantimes.co.jp/news/2021/04/18/world/coronavir...

moses-palmer 5y ago
I think supply is not the only thing to consider. I suffered a SARS-CoV-2 infection around Easter, and received my first vaccine dose a week ago. 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.

hellbannedguy 5y ago

There was a similar, or same study published by Nature I saw here a few weeks ago. I would have happily skipped the second Pfizer shot if the CDC said it was ok.