According to USA scientists, BCG vaccine is useful for the treatment of COVID-19.This vaccine primly against …..? A) Common Flow B) Cancer treatment C) Tuberculous D) AIDS Related MCQs: Which country unveiled ‘Operation Warp Speed’ to find the vaccine of COVID-19? In which Country protest broke out against COVID-Vaccine Which country hosted Global Vaccine Summit 2020? The AZD1222 Covid-19 vaccine has been developed by: