(Ralph Ellis/ WedMD) — People who develop antibodies after becoming infected with the coronavirus may not keep them more than a few months, especially if they showed no symptoms to begin with, a Chinese study shows.
Previous studies had found that most people who became infected developed antibodies. Health departments around the world give antibody tests as a way to prove a person has already had the coronavirus.
Scientists in the Wanzhou district of China studied 37 people who became infected with the coronavirus and showed symptoms and 37 people who became infected and showed no symptoms, according to the study published in the online journal Nature.
Eight weeks after recovery, antibody levels fell to undetectable levels in 40% of asymptomatic people and 13% of symptomatic people, Nature said. (…)