Patients' Covid-19 antibodies decline 'sharply' within one month

In the study researchers monitored Sars-CoV-2-specific antibody responses in 19 non-severe and seven severe Covid-19 patients for seven weeks from disease onset.

The antibody response in patients who have recovered from coronavirus is not typically strong, and declines sharply one month after hospital discharge, a new study suggests.

A better understanding of antibody responses against Sars-CoV-2, the virus that causes Covid-19, will provide fundamental information for developing effective treatments and a preventive vaccine, experts say.