Ill-advised therapies can cause COVID-19 mutations; vaccine effective against new strain: ICMR chief December 29th, 2020 Ill-advised therapies can cause COVID-19 mutations; vaccine effective against new strain: ICMR chief December 29, 2020Technology Ill-advised therapies can cause COVID-19 mutations; vaccine effective against new strain: ICMR chief December 29th, 2020