According to a study published in the New England Journal of Medicine, a previous Covid infection provided moredurable protection against infections with the omicron variant than two or three doses of Pfizer or Moderna's vaccines.
According to a peer reviewed study, a previous Covid infection halved the risk of re-infection with omicron.
The researchers said that the protection against reinfection was moderate anddurable.
The researchers said that the protection faded quickly after the primary vaccine and that most of the people would have had their second vaccine more.
The researchers found that the best protection against reinfection was provided by hybrid immunity after both vaccinations.
The benefit of vaccine was underscored by the findings.
The researchers said that previous infections, vaccinations and hybrid immunity all gave a high degree of protection against serious or fatal illnesses.
There is a growing amount of research showing the strong protective benefits that come after both vaccinations and infections. Even if you've already had Covid-19, it shows the benefits of getting a shot. As the highly infectious omicron variant surged around the globe regardless of vaccine coverage, it underscored the Transient nature of some aspects of vaccine-derived protection. Experts don't fully understand why natural infections provide more durable immunity and it's possible this varies depending on the variant a person isinfecting with The study would have looked at people who were affected by the variant before the wave hit. Public health officials and scientists are trying to understand how to reproduce this more durable natural immunity as they prepare the next generation of vaccines for anticipated booster campaigns in the fall. Infections with omicron may not provide much protection against the next one.
The degree of protection from hybrid immunity after boosting appeared to be two separate layers, as if protection from infection and vaccination acted independently rather than synergistically or through a similar mechanism. The protection from primary vaccine had faded over time for people who had just had a past infectious disease, and this was also observed among people who had been exposed before and had not been boosted. There needs to be further investigated to understand how the two forms of immunity work.
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