COVID-19: Coronavirus yang bisa berubah bentuk menjatuhkan kepercayaan para ilmuwan

Doctor Anil Mehta gives the Astra Zeneca vaccine to a homeless person at the homeless accommodation YMCA in Romford, east London, Wednesday, Feb. 3, 2021. The British health service NHS England have started with doctor Mehta and his team to vaccinate homeless 'vulnerable' people.