Antibodies against coronavirus variants weaken in 6-12 months: study

The findings by a Yokohama City University research team suggest that people who were infected in the early days of the pandemic, particularly those who had mild or no symptoms, still need to be vaccinated to reduce the risk of being infected by variants from Britain, South Africa, Brazil and India.

In the study, conducted on 250 people between the ages of 21 and 78, who tested positive for COVID-19 between February and April last year, 97 percent of those with mild or no symptoms had antibodies against the coronavirus six months after being infected. One year later, 96 percent of them still had antibodies to the disease.

Source: Antibodies against coronavirus variants weaken in 6-12 months: study