Belongings of patients are seen at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021.(AP Photo/Rafiq Maqbool)

A nurse holds the hand of a patient in an effort to calm him as he gets breathless at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021. (AP Photo/Rafiq Maqbool)

Health workers attend to a patient at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021.(AP Photo/Rafiq Maqbool)

A health worker takes a water break at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Friday, May 7, 2021.(AP Photo/Rafiq Maqbool)

A health worker helps a patient to speak on mobile phone with her family in the high dependency unit of BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Friday, May 7, 2021. (AP Photo/Rafiq Maqbool)

A health worker looks over patient files at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Friday, May 7, 2021. (AP Photo/Rafiq Maqbool)

A doctor speaks on the intercom with a senior consultant giving an update of a patient at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021. (AP Photo/Rafiq Maqbool)

Health workers give water to a patient at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021. (AP Photo/Rafiq Maqbool)

A health worker offers tea to a patient at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Friday, May 7, 2021. (AP Photo/Rafiq Maqbool)

A cleaner tosses aside a pair of sandals as she does her rounds at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021. (AP Photo/Rafiq Maqbool)

A nurse poses for a photograph inside a ward at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Friday, May 7, 2021.(AP Photo/Rafiq Maqbool)

A health worker tries to adjust the oxygen mask of a patient at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021.(AP Photo/Rafiq Maqbool)

Doctors check touch sensitivity response of a patient at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021. (AP Photo/Rafiq Maqbool)

Senior consultants monitor and evaluate each patient's medical condition remotely in the war room of BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Friday, May 7, 2021.(AP Photo/Rafiq Maqbool)

Health workers attend to a patient at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021.(AP Photo/Rafiq Maqbool)

Health workers keep a watch on patients in a ward at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Friday, May 7, 2021.(AP Photo/Rafiq Maqbool)

A patient is given advise on post discharge care after treatment at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021. (AP Photo/Rafiq Maqbool)

A health worker brings an oxygen cylinder on a wheelchair at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021. (AP Photo/Rafiq Maqbool)

A monitor tracks a patient's parameters at the BKC jumbo field hospital, one of the largest COVID-19 facilities in Mumbai, India, Thursday, May 6, 2021. (AP Photo/Rafiq Maqbool)