Shinjini Chaudhuri; Shivaraj Afzalpurkar; Vikram Uttam Patil; Gajanan Ashok Rodge; Mohuya Mukherjee; Surabhi Jajodia; Usha Goenka; Mahesh Kumar Goenka. Six Months Follow-Up Study on Health Care Workers on Persistence of Antibodies to SARS-CoV-2 After Covishield Vaccination. jemds 2022, 11, 884-887.