A visitor wearing a face mask as a precaution against the coronavirus walks near a field of tulips at a park in Goyang, South Korea, Friday, April 23, 2021. (AP Photo/Lee Jin-man)

Flames rise from cremation pyres of victims of a fire that broke out in Vijay Vallabh COVID-19 hospital, at Virar, near Mumbai, India, Friday, April 23, 2021. A fire killed 13 COVID-19 patients in a hospital in western India early Friday as an extreme surge in coronavirus infections leaves the nation short of medical care and oxygen. (AP Photo/Rajanish Kakade)

FILE - In this Feb. 24, 2020, photo, the Olympics rings are reflected on the window of a hotel restaurant as a server with a mask sets up a table, in the Odaiba section of Tokyo. Japan on Friday, April 23, declared a state of emergency to curb a rapid coronavirus resurgence, the third since the pandemic began. The measures in parts of Japan, including Tokyo, have so far failed to curb infections caused by a more contagious new variant of the virus. (AP Photo/Jae C. Hong, File)

FILE - In this Jan. 4, 2021, file photo, some people commute on the first business day of the year at a train station, in Tokyo. Japan on Friday, April 23, declared a state of emergency to curb a rapid coronavirus resurgence, the third since the pandemic began. The measures in parts of Japan, including Tokyo, have so far failed to curb infections caused by a more contagious new variant of the virus. (AP Photo/Eugene Hoshiko, File)

Peoples line up for a coronavirus test in Bangkok, Thailand, Friday, April 23, 2021. Thailand’s health authorities announced Friday they have confirmed just over 2000 new COVID-19 cases, a new daily record that brings the country's total to 50,183. (AP Photo/Nathatida Adireksarn)

A COVID-19 patient attended by a health worker inside a vehicle at a dedicated COVID-19 government hospital in Ahmedabad, India, Thursday, April 22, 2021. A fire killed 13 COVID-19 patients in a hospital in western India early Friday as an extreme surge in coronavirus infections leaves the nation short of medical care and oxygen. India reported another global record in daily infections for a second straight day Friday, adding 332,730 new cases. The surge already has driven its fragile health systems to the breaking point with understaffed hospitals overflowing with patients and critically short of supplies. (AP Photo/Ajit Solanki)

Oxygen tanks are left in a queue to be refilled in New Delhi, India, Friday, April 23, 2021. India put oxygen tankers on special express trains as major hospitals in New Delhi on Friday begged on social media for more supplies to save COVID-19 patients who are struggling to breathe. India’s underfunded health system is tattering as the world’s worst coronavirus surge wears out the nation, which set another global record in daily infections for a second straight day with 332,730. (AP Photo)

A man performs the final rites of a relative who died of COVID-19, at a crematorium in Jammu, India, Friday, April 23, 2021. India’s underfunded health system is tattering as the world’s worst coronavirus surge wears out the nation, which set another global record in daily infections for a second straight day with 332,730. India has confirmed 16 million cases so far, second only to the United States in a country of nearly 1.4 billion people. (AP Photo/Channi Anand)