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People infected with coronavirus is unlikely to contract the disease again for at least six months, according to a study released today by the Oxford University.
This large-scale research on immunity in the face of a possible new contagion of covid-19 It was conducted in conjunction with Oxford University Hospitals, although it has not yet been subject to an independent review.
Their results confirm what many healthcare professionals observe that more than 57 million people worldwide have been infected with the SARS Cov-2 virus, but cases of re-infection remain relatively few.
This is “very good news,” said Professor David Eyre, one of the authors of the research, who said you can “be sure that, at least in the short term, most people who contract covid-19 They won’t contract it anymore. “
The study is based on coronavirus tests carried out regularly on 12,180 health workers at university hospitals in Oxford for a period of 30 weeks, according to AFP.
None of the 1,246 employees who carried the antibodies developed symptomatic infections and only three, without symptoms, tested positive for the virus a second time.
We know from a previous study that antibody levels decrease over time, but this latest study shows that there is some immunity in those who have been infected, ”he said.
However, these results contradict another British study published last October by Imperial College London and the Ipsos Mori Institute, according to which the immunity acquired by people recovered from coronavirus decreases “quite rapidly”, especially in patients. asymptomatic and could only last a few months.
Researchers of Oxford said they had not yet collected enough data to comment on what might happen six months after becoming infected with coronavirus.
However, the ultimate goal of their study is to verify the overall duration of immunity.
At the same time, other research conducted at the University of St Andrews has shown that people coronavirus They are more likely to be highly contagious within the first week of symptom onset.
Depending on the job, usually within five days of the first symptoms of coronavirus, people are at increased risk of transmitting the virus, which underscores the importance of identifying and isolating cases early.
The study, published in The Lancet Microbe, was conducted by researchers at the University of St Andrews; Western General Hospital, Edinburgh; University Hospital, Wishaw; the University of Edinburgh; Cotugno Hospital, Naples; and the University of Glasgow, and focused primarily on hospitalized people infected with coronavirus.
Muge Cevik of St Andrews University School of Medicine, lead author of the research, said that “this is the first systematic review and meta-analysis that has comprehensively examined and compared viral load and the spread of three coronavirus human “.
Cevik also cautioned against the importance of increasing public awareness of the variety of symptoms related to the disease, including mild symptoms that can occur before or during infection, and stronger ones such as cough or fever, to allow immediate self-isolation treatment.
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