As more and more people weather infections from coronavirus, testing for the virus’ antibodies have become increasingly popular. However, medical experts have cautioned those who appear to have immune system protections against reinfection that they may not be invulnerable in the long term, as so much remains to be discovered about COVID-19.
A new study conducted in China adds to the uncertainty. Researchers from Chongqing Medical University looked at the immune systems of 74 people diagnosed with coronavirus — half of whom were symptomatic and half of whom were asymptomatic. The study found that 40 percent of the asymptomatic patients and 13 percent of the other patients lost their antibodies quickly, in as little as two months.
It’s impossible to draw any co