The study aimed to evaluate antibody responses to the SARS-CoV-2 virus after receiving the Covishield vaccine over a period of 6 months.
Over 51% of participants were already seropositive before vaccination, and nearly all became seropositive after the second dose, with antibody levels peaking one month post-vaccination.
Antibody levels decreased significantly by 6 months, particularly in older participants, indicating the need for potential booster doses to maintain immunity.