
FILE - In this Sunday, Dec. 31, 2017, file photo, tourists line up for stepping up Angkor Wat temple outside Siem Reap, Cambodia. Cambodia is closing the Angkor temple complex to visitors because of a growing COVID-19 outbreak. The temples at Angkor, built between the 9th and 15th centuries, are Cambodia’s biggest tourist attraction, though the pandemic has reduced the number of visitors dramatically. The Apsara Authority that oversees the site says the ban on visitors will last until April 20. (AP Photo/Heng Sinith, File)

Workers in a local entertainment venue area line up for the coronavirus test in Bangkok, Thailand, Thursday, April 8, 2021. Thailand has confirmed its first local cases of the coronavirus variant first detected in the U.K., raising the likelihood that it is facing a new wave of the pandemic, a senior doctor said Wednesday. (AP Photo/Sakchai Lalit)

A woman along with her children wait for a train at Lokmanya Tilak Terminus in Mumbai, India, Wednesday, April 7, 2021. India hits another new peak with 115,736 coronavirus cases reported in the past 24 hours with New Delhi, Mumbai and dozens of other cities imposing night curfews to check the soaring infections. (AP Photo/Rafiq Maqbool)

FILE - In this March 3, 2018, file photo, a view from outside Angkor Wat temple is seen in Siem Reap, northwestern Cambodia. Cambodia is closing the Angkor temple complex to visitors because of a growing COVID-19 outbreak. On Thursday, April 8, 2021, the Health Ministry said 113 cases were reported from local transmission, with two deaths. The ministry traced the outbreak to a foreign resident who broke hotel quarantine to visit a nightclub. (AP Photo/Heng Sinith, File)

Health workers prepare equipments for nasal swab tests for workers in a local entertainment venue area where a new cluster of COVID-19 infections were found in Bangkok, Thailand, Thursday, April 8, 2021. Thailand has confirmed its first local cases of the coronavirus variant first detected in the U.K., raising the likelihood that it is facing a new wave of the pandemic, a senior doctor said Wednesday. (AP Photo/Sakchai Lalit)

People wait in a queue to test for COVID-19 in Prayagraj, India, Thursday, April 8, 2021. India now has a seven-day rolling average of more than 80,000 cases per day and has reported 12.9 million coronavirus cases since the pandemic began, the highest after the United States and Brazil. (AP Photo/Rajesh Kumar Singh)

A woman wearing mask walks past a notice about the shortage of coronavirus (COVID-19) vaccine supply outside a vaccination centre in Mumbai, India, Thursday, April 8, 2021. India started its vaccination drive in January. So far, more than 90 million Indians above 45 and health workers have received at least one shot and only 11 million of them have got both. (AP Photo/Rafiq Maqbool)