Govt panel says no to Serum Institute's Covovax trial on children aged 2-17 years Govt panel says no to Serum Institute's Covovax trial on children aged 2-17 years An expert government panel has recommended against granting permission to the Serum Institute of India (SII) to conduct clinical trial of Covid-19 vaccine Covovax on children in the age group 2-7 years. advertisement UPDATED: July 1, 2021 10:24 IST A government panel has said no to Serum Institute's Covovax trial on children aged 2-17 years. (Image for representation: PTI) An expert panel on Wednesday recommended against granting permission to Pune's Serum Institute of India (SII) for conducting the phase 2/3 trial of Covid-19 vaccine Covovax on children aged between two to 17 years, sources said. The panel asked the pharmaceutical company to complete trials on adults first.