COVID-19 Vaccination Among Healthcare Workers: Trend and Protection in a Tertiary Care Hospital in Northern India.

Background Coronavirus disease 2019 (COVID-19) is an infectious disease that poses health risks to everyone exposed to the virus and frontline healthcare workers (HCWs) are at very high risk. COVID-19 vaccines have been developed to offer protection from the disease and reduce the severity of illness. Objective This questionnaire-based cross-sectional survey aimed to determine COVID-19 vaccination trends and protection among HCWs in a dedicated COVID-19 tertiary care hospital in Northern India. Methods A printout of the questionnaire was distributed. Part 1 of the questionnaire included voluntary consent and demographics information, and part 2 dealt with COVID-19 vaccination, COVID-19 illness, and post-vaccination illness. The outcomes of the study comprised trends and protection offered by COVID-19 vaccination, post-vaccination side-effects, and reasons for vaccine hesitancy. The responses were analyzed using Stata version 15.0. Results: A total of 256 HCWs were approached to take the questionnaire, out of whom 241 consented to participate in the survey. One-hundred and fifty-five (64.3%) of these HCWs were fully vaccinated, 53 (21.9%) were partially vaccinated, and 33 (13.7%) were non-vaccinated. The overall rate of infection was 45.64% (110/241). The rate of infection was 58.18% among non-vaccinated HCWs, 21.81% after partial vaccination, and 20% after full vaccination. The odds of infection among vaccinated versus non-vaccinated HCWs was 0.338 (95% CI: 0.224 to 0.512;