New study show immunity drops quickly in mild COVID-19 cases
The researchers found a rapid drop in antibodies - the immune system proteins that help stop viruses from infecting cells in the body. On average, the antibody levels fell by half every 73 days, according to the study published in The New England Journal of Medicine.
A study shows that in people with mild COVID-19 cases, their antibodies against the coronavirus drop sharply over the first three months after infection. Phtoto: Reuters