Study finds previous COVID-19 infection, but not vaccination, improves performance of antibodies and potentially provides longer-term protection.
Researchers also found that previously-infected patients with obesity, contrary to expectations, had a higher and more sustained immune response
New research to be presented at this year’s European Congress of Clinical Microbiology & Infectious Diseases (ECCMID 2022, Lisbon, 23-26 April) shows that, although over time the number of SARS-CoV-2 antibodies falls in both previously infected and vaccinated patients, the performance of antibodies improves only after previous infection (and not vaccination). This difference could explain why previously infected patients appear to be better protected against a new infection than those who have only been vaccinated.
