HealthDay Reporter
FRIDAY, June 4, 2021 (HealthDay Information) — In some excellent news for individuals who have already suffered by means of a bout of COVID-19, a brand new research finds they could have a a lot decrease threat of reinfection for a minimum of 10 months.
For the research, the researchers analyzed charges of SARS-CoV-2 infections between October 2020 and February 2021 amongst greater than 2,000 nursing dwelling residents (median age 86) and workers. Antibody testing was used to find out whether or not they’d had a earlier an infection as much as 10 months earlier.
Residents with a earlier an infection have been 85% much less more likely to be contaminated in the course of the four-month research interval than those that had by no means been contaminated, whereas workers with previous infections have been 60% much less more likely to be contaminated than workers who had by no means been contaminated, the findings confirmed.
Of the 634 individuals who had been beforehand contaminated, reinfections occurred in 4 residents and 10 workers members, in contrast with 93 residents and 111 workers among the many 1,477 who had by no means been contaminated, in keeping with the research printed June Three in The Lancet Wholesome Longevity journal.
The research excluded the impression of vaccination by eradicating individuals from the evaluation 12 days following their first vaccine dose. The authors are taking a look at vaccine effectiveness in a separate research.
“It is actually excellent news that pure an infection protects in opposition to reinfection on this time interval. The danger of being contaminated twice seems to be very low,” mentioned lead writer Maria Krutikov, from the Institute of Well being Informatics at College Faculty London (UCL), in the UK.
“The truth that prior COVID-19 an infection provides a excessive stage of safety to care dwelling residents can also be reassuring, given previous issues that these people may need much less sturdy immune responses related to growing age,” Krutikov mentioned in a college information launch.
“These findings are notably necessary as this susceptible group has not been the main target of a lot analysis,” she added.
In keeping with research senior writer Laura Shallcross, from UCL’s Institute of Well being Informatics, “This was a novel alternative to take a look at the protecting impact of pure an infection on this cohort forward of the roll-out of vaccination. An necessary subsequent step is to research the period of immunity following pure an infection and vaccination, and to evaluate whether or not this protecting impact is maintained in opposition to present and rising variants.”
Extra info
The U.S. Facilities for Illness Management and Prevention has extra on COVID-19 reinfection.
SOURCE: College Faculty London, information launch, June 3, 2021
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