Stories of individuals testing constructive, weeks after they had been believed to have recovered, have led some to assume they is perhaps reinfected.
Scientists don’t know for positive but, however they consider it’s unlikely.
Well being specialists assume individuals who had COVID-19 can have some immunity towards a repeat an infection. However they don’t know the way a lot safety or how lengthy it might final.
There have been experiences of individuals testing constructive for the virus weeks after they had been believed to have recovered, main some to assume they might have been reinfected. Extra probably, specialists say individuals had been affected by the identical sickness or the exams detected remnants of the unique an infection. There’s additionally the prospect exams may have been false positives.
Scientists say there was no documented occasion of a affected person spreading the virus to others after retesting constructive.
With related viruses, research have proven that individuals may fall sick once more three months to a yr after their first infections. It’s nonetheless too early to know whether or not that’s additionally attainable with the coronavirus.
“It’s very a lot rising science,” mentioned Dr Philip Landrigan, director of the worldwide public well being program at Boston Faculty.
A small U.S. examine printed final week additionally discovered the antibodies that struggle the coronavirus might solely final just a few months in individuals with gentle sickness, suggesting individuals may turn out to be prone once more. However antibodies aren’t the one defence towards a virus, and the opposite elements of the immune system may additionally assist present safety.
Full Protection: Viral Questions
Settling the query of whether or not reinfection is feasible is vital. If it may well happen, that might undermine the thought of “immunity passports” for returning again to workplaces. And it might not bode properly for hopes of getting a long-lasting vaccine.