LONDON: Individuals who’ve had COVID-19 are extremely unlikely to contract it once more for at the least six months after their first an infection, in accordance with a British research of healthcare staff on the frontline of struggle towards the coronavirus pandemic.
“That is actually excellent news, as a result of we may be assured that, at the least within the quick time period, most individuals who get COVID-19 received’t get it once more,” stated David Eyre, a professor at Oxford’s Nuffield Division of Inhabitants Well being, who co-led the research.
Remoted instances of re-infection with COVID-19, the illness brought on by the SARS-CoV-2 virus, had raised issues that immunity is likely to be short-lived and that recovered sufferers might swiftly fall sick once more.
However the outcomes of this research, carried out in a cohort of UK healthcare staff – who’re amongst these at highest danger of contracting COVID-19 – recommend instances of reinfection are prone to stay extraordinarily uncommon.
“Being contaminated with COVID-19 does supply safety towards re-infection for most individuals for at the least six months,” Eyre stated. “We discovered no new symptomatic infections in any of the contributors who had examined optimistic for antibodies.”
The research, a part of a serious employees testing programme, lined a 30-week interval between April and November 2020. Its outcomes haven’t peer-reviewed by different scientists however had been revealed earlier than evaluate on the MedRxiv web site.
Through the research, 89 of 11,052 employees with out antibodies developed a brand new an infection with signs, whereas not one of the 1,246 employees with antibodies developed a symptomatic an infection.
Workers with antibodies had been additionally much less prone to take a look at optimistic for COVID-19 with out signs, the researchers stated, with 76 with out antibodies testing optimistic, in comparison with solely three with antibodies. These three had been all effectively and didn’t develop COVID-19 signs, they added.
“We are going to proceed to comply with this cohort of employees fastidiously to see how lengthy safety lasts and whether or not earlier an infection impacts the severity of an infection if folks do get contaminated once more,” Eyre stated.