Supporters of Trinamool Congress party chief Mamata Banerjee holding an earlier photograph of her celebrate early lead for the party in the West Bengal state elections in Kolkata, India, Sunday, May 2, 2021. (AP Photo/Ashim Paul)

A woman argues with a doctor as she is turned back following shortage of COVID-19 vaccine at a vaccination center in Mumbai, India, Monday, May 3, 2021. (AP Photo/Rafiq Maqbool)

Relatives of a person who died of COVID-19 mourn outside a field hospital in Mumbai, India, Monday, May 3, 2021. (AP Photo/Rafiq Maqbool)

Indian workers disinfectant an isolation center for COVID-19 positive people in Hyderabad, India, Monday, May 3, 2021. (AP Photo/Mahesh Kumar A.)

Relatives of a person who died of COVID-19 mourn outside a field hospital in Mumbai, India, Monday, May. 3, 2021..(AP Photo/Rafiq Maqbool)

An Indian man awaits customers as he sells face masks on a street during the COVID-19 pandemic in Hyderabad, India, Monday, May 3, 2021. (AP Photo/Mahesh Kumar A.)

Family members of COVID-19 patients wait in queue to refill their oxygen cylinders at Mayapuri area in New Delhi, India, Monday, May 3, 2021. Indian hospitals are struggling to secure a steady supply of oxygen, and more COVID-19 patients are dying amid the shortages. (AP Photo/ Ishant Chauhan)

Health workers sit in the waiting area of a vaccination center which has been closed because of shortage of the COVID-19 vaccine in Mumbai, India, Monday, May 3, 2021. (AP Photo/Rafiq Maqbool)

An Indian health worker takes a break between collecting swab samples for COVID-19 test in Hyderabad, India, Monday, May 3, 2021. (AP Photo/Mahesh Kumar A.)