Prior Covid-19 infection reduces infection risk for 10 months.


Though protection is not complete, the natural infection likely to protect against more severe illness: study.
The previous infection of Covid-19 substantially reduces the risk of a new condition for up to 10months subsequently, according to a study of care home residents and staff by University College London (UCL) scientists.

Infected people around 60% were less likely to become infected again for staff.

“It’s really good news that natural infection protects against reinfection in this period. The risk of being infected twice appears to be very low,” the study’s lead researcher, Maria Krutikov of the UCL Institute of Health Informatics, said.

“The fact that prior Covid-19 infection gives a high level of protection to care home residents is also reassuring, given past concerns that these individuals might have less robust immune responses associated with increasing age.”

A study involved care home residents 682, with an age of median 86, and about 1,400+ staff in care homes. Last year tests conducted in June and July showed a positive presence of coronavirus antibodies.

The study eliminated the impact of vaccination by removing people 12 days after the first vaccine dose. The authors plan to make detailed vaccine effectiveness in a separate study.
The researchers said the study period covered the emergence of an even more contagious variant identified first in the UK and now known as Alpha, implying a good level of protection against that variant. However, the concerning variant initially discovered in India and now designated the Delta variant has subsequently emerged and become dominant in Britain.


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