People who've had COVID-19 are highly unlikely to contract it again for at least six months after their first infection, according to a British study of healthcare workers on the frontline of fight against the coronavirus pandemic.
The Oxford study into reinfection drew on data from regular coronavirus testing of 12,180 health care workers at OUH over a period of 30 weeks.
A study published Friday by Oxford University ensures that people infected with coronavirus have little chance of returning to the disease in at least six months.
Additionally, the opposite also proved true healthcare workers who did not have antibodies against COVID-19 were more likely to develop the infection.
"Being infected with COVID-19 does offer protection against re-infection for most people for at least six months", Eyre said.
"We are seeing sustained levels of immune response in humans so far", Mike Ryan, WHO's top emergency expert, told a news conference on Friday. And he considered that this finding makes "expect longer periods of protection" when a vaccine is available. From a non-peer reviewed study from King's College in London, immunity faded more quickly but was better for patients who had experienced strong symptoms from COVID-19.
In addition, 76 staff members without antibodies tested positive for COVID-19, but did not have outward symptoms of the disease, while three of those with antibodies remained asymptomatic, according to the researchers.
Comparing mothers with and without Covid-19 diagnosed at any time during pregnancy, the Covid-19 virus did not increase the risk of adverse outcomes, including preterm birth, preeclampsia with severe features, or cesarean delivery for abnormal fetal heart rate.
The researchers then followed whether staff who had been infected before had the same number of new COVID-19 infections as those who had not been infected before.
The study discovered that staff with antibodies were also likely to test positive for COVID-19 without symptoms, the researchers reported.
Chronic understaffing at nursing homes has been one of the hallmarks of the pandemic, with a few homes even forced to evacuate because so many workers either tested positive or called in sick.
Susan Hopkins, Deputy Director, National Infection Service, PHE and one of the study's authors said: This study is a fantastic example of how well-structured long-term cohort surveillance can produce hugely useful results.
However, there are hopes after the study indicated that reinfection is extremely rare.