In a new study from Clalit Health Services, researchers found after you have recovered from COVID-19, getting at least one dose of a vaccine provides added protection against reinfection.
They found that stay unvaccinated after being infected with COVID-19 and you’re five times more likely than someone who has had the shot to get COVID again.
That’s because the immunity acquired through infection is short-lived.
Many patients think that because they have antibodies from having COVID-19, they don’t need the vaccine.
In the study, the team collected data on more than 149,000 patients in Israel. All had recovered from COVID-19 and had not been previously vaccinated.
More than 83,000 of them were vaccinated after recovery. Of those, 354 got COVID-19 again, compared with 2,168 who remained unvaccinated.
That works out to about two reinfections per 100,000 among vaccinated patients compared to 10 per 100,000 among the unvaccinated.
These data were based on the Pfizer-BioNTech vaccine, which was 82% effective among 16- to 64-year-olds, and 60% effective among older people.
The team found its effectiveness was the same whether patients received one or two doses, the researchers noted.
That finding supported evidence from earlier studies that found one dose was plenty to protect against reinfection.
Researchers suggest that people who have had COVID should get the vaccine. How many doses they get has to do with their doctor and their situation.
For more information about Covid, please see recent studies that people can lose 80% of their COVID-19 immunity 6 months after Pfizer shot, and results showing that COVID-19 booster shots prompt stronger, longer protection than original shots.
The study is published in the New England Journal of Medicine and was conducted by Ronen Arbel et al.
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