Younger people who have recovered from Covid-19 are going to be deliberately reinfected as part of a scientific study.Volunteers aged 18-30 will be taking part in Oxford University’s ‘human challenge’ trial and they will receive just under £5,000 as payment.in a safe, controlled environment. They will be quarantined for 17 days while they are cared for by researchers at a hospital until they are free of infection.for things like malaria, tuberculosis, typhoid, cholera and flu.
According to an observational study of more than 3,000 healthy members of the US Marine Corps, most of whom were aged 18-20, between May and November 2020, around 10% of participants who had previously been infected with Sars-CoV-2 became reinfected. But researchers found that only 0.65% of those who had had Covid-19 during Denmark’s first wave tested positive again during the second wave, compared with 3.3% of people who tested positive after initially being negative.In addition, a preprint study including UK healthcare workers found that those who had not been previously infected had a five times higher risk of being infected than people who had a past infection.
Levels of neutralising antibodies were also taken from subsequently infected seropositive and selected seropositive participants who were not reinfected during the study period.
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