In a cohort study, researchers from the University of Padua and Imperial College London tested more than 85 percent of 3,000 residents of Vo’, Italy in February/March 2020 for infection with SARS-CoV-2, the virus COVID-19. Causes. , and tested them again in May and November 2020 for antibodies against the virus. Researchers found that antibody levels remained high nine months after infection with SARS-CoV-2, the virus that causes COVID-19, whether symptomatic or asymptomatic.
The team found that 98.8 percent of those infected in February/March showed detectable levels of antibodies in November, and there was no difference between those who were suffering from symptoms of COVID-19 and those who were symptom-free. The results have been published in the journal Nature Communications. Furthermore, while all antibody types showed some decline between May and November, the rate of decay was different depending on the test to track antibody levels. The team also found cases of increased antibody levels in some people, suggesting possible re-infection. The virus provides a boost to the immune system.
Lead author Ilaria Dorigatti from the MRC Center for Global said, “We found no evidence that antibody levels differ significantly between symptomatic and asymptomatic infections, suggesting that the strength of the immune response does not depend on symptoms and severity of infection. does.” Infectious disease analysis at Imperial.
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