Prior COVID-19 sickness reduces threat of second an infection for months, research finds

A U.Ok. research involving care dwelling residents discovered {that a} prior COVID-19 an infection reduces the danger of being contaminated by the virus once more for a number of months. The research, which was printed in Lancet Wholesome Longevity, performed antibody checks on 682 residents throughout 100 care houses in England in June and July of 2020. 

About 1,429 employees additionally underwent antibody testing in that very same time interval. A few third of all research contributors examined constructive, suggesting prior COVID-19 an infection. Starting 90 days following the antibody testing, employees contributors underwent weekly PCR testing, whereas resident contributors have been examined as soon as monthly. 

Those that acquired a COVID-19 vaccine have been faraway from the research 12 days after their first dose. 


Of the 634 employees and residents who had constructive antibody leads to June and July, reinfections have been thought-about low. Solely 4 residents and 10 staffers developed a second an infection, suggesting about an 85% much less chance amongst residents and about 60% much less chance amongst staffers. Researchers cautioned that some employees might have been examined outdoors of their facility, which might not be included within the research knowledge. 

Nonetheless, researchers mentioned the findings have been encouraging. 

“The truth that prior COVID-19 an infection provides a excessive degree of safety to care dwelling residents can also be reassuring, given previous issues that these people might need much less sturdy immune responses related to growing age,” Dr. Maria Krutikov, lead writer, mentioned in a press release. “These findings are notably essential as this susceptible group has not been the main target of a lot analysis.”


Dr. Laura Shallcross, a senior writer on the research, mentioned the subsequent step could be to research the length of immunity following pure an infection and vaccination and to evaluate whether or not it stands in opposition to present and rising variants.  

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