Breakthrough COVID19 infections after vaccinations in healthcare and other workers in a chronic care medical facility in New Delhi, India.

Abstract Background and Aims Vaccinations are now open to all adults in India. However, spread of COVID19 infection continues unabated. We aimed to ascertain number of breakthrough infections after vaccinations in a chronic care, diabetes-centric healthcare facility. Methods We received rigorously maintained data of vaccinations, health status, symptoms of COVID19 & RT-PCR testing of all staff (doctors, nurses, paramedical workers, other staff) in our health care facility from January 16, 2021 till date. Results Out of 123 employees, 110 were vaccinated (Covaxin, 28, Covishield, 85). Second dose was completed in 107 (94.7%) and first dose in 6 persons (5.3%). Breakthrough infections occurred in 18 persons (15.9%), 17 of them had incurred it after the second dose. Except one (required hospitalization), all (94.5%) had mild COVID19 disease. Conclusions High prevalence of mild breakthrough infection is seen in our health care facility. Research in breakthrough infections in India should be extended to other institutions and community to obtain larger data.