Covid Antibodies Last 8 Months After Infection: Study

They were present "regardless of the severity of the illness, the age of the patients or the presence of other pathologies," according to a statement from the San Raffaele hospital in Milan.

Antibodies against coronavirus remained in the blood of patients with Covid-19 for at least eight months after they were infected, Italian researchers said Tuesday. They were present "regardless of the severity of the illness, the age of the patients or the presence of other pathologies," according to a statement from the San Raffaele hospital in Milan. The researchers, working with Italy's ISS national health institute, studied 162 patients with symptomatic coronavirus who turned up at the emergency room during the country's first wave of infections last year. Blood samples were taken in March and April and again at the end of November from those who survived. Some 29 patients died.