https://www.newsbuyback.com/2021/08/johnson-and-johnson-%e0%a4%95%e0%a5%80-covid-19-vaccine-%e0%a4%95%e0%a5%8b-emergency-approval-%e0%a5%a4-single-dose-%e0%a5%a4-coronavirus/
Johnson and Johnson की Covid-19 Vaccine को Emergency Approval । Single Dose । Coronavirus