COVID-19(58) SARS-CoV-2(52) Infection(35) India(30) antibody(25) positive(23) healthcare worker(21) tested(20) antibodies(19) IgG antibody(19) Seropositivity(19) Care(18) COVID 19(18) General population(17) RT-PCR(17) pandemic(17) Asymptomatic(16) significantly higher(14) detectable(14) SARS-CoV-2.(13) Vaccine(13) HCW(12) virus(12) hospital(12) HCWs(12) questionnaire(12) demonstrated(11) Factor(11) Health care(11) infection control(11)