Nearly a third of the participants of an observational study on Bharat Biotech’s vaccine reported adverse events of special interest, and serious adverse events may occur in 1% of recipients, a recently published report said Nearly a third of the participants of an observational study on Bharat Biotech’s vaccine reported adverse events of special interest, and serious adverse events may occur in 1% of recipients, a recently published report said Health Health News, Wellbeing Tips, Diseases, Treatment and Nutrition | The Hindu