An Indian health worker takes photograph of an elderly woman while registering names before administering COVISHIELD vaccine at the Guwahati Medical College hospital in Gauhati, India, Monday, March 1, 2021. India is expanding its COVID-19 vaccination drive beyond health care and front-line workers, offering the shots to older people and those with medical conditions that put them at risk. (AP Photo/Anupam Nath)

A health worker shows COVISHIELD vaccine before administering it to an elderly person in Gauhati, India, Monday, March 1, 2021. India is expanding its COVID-19 vaccination drive beyond health care and front-line workers, offering the shots to older people and those with medical conditions that put them at risk. (AP Photo/Anupam Nath)

Elderly Indians awaits their turn to get vaccinated for COVID-19 at a vaccination center in Mumbai, India, Monday, March 1, 2021. India is expanding its COVID-19 vaccination drive beyond health care and front-line workers, offering the shots to older people and those with medical conditions that put them at risk. As of Monday, those eligible to be vaccinated include people over 60, as well as those over 45 who have ailments such as heart disease or diabetes that make them vulnerable to the coronavirus. (AP Photo/Rafiq Maqbool)