Screening of children in the age group of 6 to 12 years for the clinical trial of Bharat Biotech’s Covaxin, a vaccine against COVID-19, will begin from tomorrow. According to sources, the recruitment for the clinical trial of Covaxin in the age group of 12 to 18 years has been stopped after they were given a single dose of the vaccine. After 6-12 year olds, AIIMS Delhi will next conduct trials on 2-6 years age group children. These trials are being held at 525 centres. Patna AIIMS, Mysore Medical College and Research Institute in Karnataka have also been selected to conduct clinical trials on children.