A patient suffering from the coronavirus disease (COVID-19) waits to get admitted outside the casualty ward at Guru Teg Bahadur hospital, amidst the spread of the disease in New Delhi, India, April 23, 2021. (Photo: Ecns.cn)

A relative holds a bottle of medicine administered to a patient sitting inside a car waiting to enter a COVID-19 hospital for treatment, amidst the spread of the coronavirus disease (COVID-19) in Ahmedabad, India, April 26, 2021. (Photo: Ecns.cn)

A patient wearing an oxygen mask is seen inside a car waiting to enter a COVID-19 hospital for treatment, amidst the spread of the coronavirus disease (COVID-19) in Ahmedabad, India, April 26, 2021. (Photo: Ecns.cn)

A patient wearing an oxygen mask sits inside an ambulance waiting to enter a COVID-19 hospital for treatment, amidst the spread of the coronavirus disease (COVID-19) in Ahmedabad, India, April 25, 2021. (Photo: Ecns.cn)

A patient wearing an oxygen mask looks on as his wife holds a battery-operated fan while waiting inside an auto-rickshaw to enter a COVID-19 hospital for treatment, amidst the spread of the coronavirus disease (COVID-19) in Ahmedabad, India, April 25, 2021. (Photo: Ecns.cn)