People who have had COVID-19 are unlikely to get the disease again for at least six months after their first infection, new research suggests. Researchers studied 12,219 British healthcare workers involved in treating people infected with the new coronavirus. COVID-19 is the disease caused by that virus. The findings could be important for tens of millions of people worldwide who have been infected, researchers at the University of Oxford said. “This is really good news, because we can be confident that, at least in the short term, most people who get COVID-19 won’t get it again,” said David Eyre. He was one of the leaders of the study. Rare cases of re-infection had caused concern that immunity from the virus might not last and that recovered patients might get sick again. But the results of the study suggest cases of reinfection are likely to remain extremely rare.