Palestinian medics wear protective suits as they take part in a simulation of possible coronavirus infections in Gaza City, Saturday, July 18, 2020. (AP Photo/Khalil Hamra)

Healthcare workers dressed in full protective gear organize their documents of data they have collected during a house-to-house new coronavirus testing drive, ringed by a produce market in the Villa Dolores neighborhood of El Alto, Bolivia, Saturday, July 18, 2020. (AP Photo/Juan Karita)

A health worker takes a swab test of a women at a temple in Mumbai, India, Saturday, July 18, 2020. India crossed 1 million coronavirus cases on Friday, third only to the United States and Brazil, prompting concerns about its readiness to confront an inevitable surge that could overwhelm hospitals and test the country's feeble health care system. (AP Photo/Rafiq Maqbool)

People wearing face masks to protect against the coronavirus sit on a railing at the Temple of Heaven in Beijing, Saturday, July 18, 2020. Authorities in a city in far western China have reduced subways, buses and taxis and closed off some residential communities amid a new coronavirus outbreak, according to Chinese media reports. They also placed restrictions on people leaving the city, including a suspension of subway service to the airport. (AP Photo/Mark Schiefelbein)

Angami Naga boys wearing face masks sit vigil at a gate erected to check the entry of non-residents into Kohima village, one of Asia's largest villages, in the northeastern Indian state of Nagaland, Saturday, July 18, 2020. The indigenous Nagas have largely taken the fight against the coronavirus as the responsibility of the community, with local youth organizations and churches, among others, aiding government agencies. (AP Photo/Yirmiyan Arthur)

Parents wearing face masks to protect against the coronavirus take photos of students as they pose for a group photo at the Temple of Heaven in Beijing, Saturday, July 18, 2020. Authorities in a city in far western China have reduced subways, buses and taxis and closed off some residential communities amid a new coronavirus outbreak, according to Chinese media reports. They also placed restrictions on people leaving the city, including a suspension of subway service to the airport. (AP Photo/Mark Schiefelbein)

Indian paramilitary soldiers carry the body of a colleague who died of COVID-19 for cremation at a crematorium in Srinagar, Indian controlled Kashmir, Saturday, July 18, 2020. India crossed 1 million coronavirus cases on Friday, third only to the United States and Brazil, prompting concerns about its readiness to confront an inevitable surge that could overwhelm hospitals and test the country's feeble health care system. (AP Photo/ Dar Yasin)

A street artist spray paints a protective face mask over an old mural featuring a Venezuelan Indigenous man, in Caracas, Venezuela, Saturday, July 18, 2020, amid the new coronavirus pandemic. (AP Photo/Matias Delacroix)

Health workers wait to screen people for COVID-19 symptoms at a temple in Mumbai, India, Saturday, July 18, 2020. India crossed 1 million coronavirus cases on Friday, third only to the United States and Brazil, prompting concerns about its readiness to confront an inevitable surge that could overwhelm hospitals and test the country's feeble health care system. (AP Photo/Rafiq Maqbool)

A health worker screens an elderly woman for COVID_19 symptoms at a temple in Mumbai, India, Saturday, July 18, 2020. India crossed 1 million coronavirus cases on Friday, third only to the United States and Brazil, prompting concerns about its readiness to confront an inevitable surge that could overwhelm hospitals and test the country's feeble health care system. (AP Photo/Rafiq Maqbool)

An elderly woman walks down a flight of stairs, helped by a policewoman, after she gave her swab sample, at a temple in Mumbai, India, Saturday, July 18, 2020. India crossed 1 million coronavirus cases on Friday, third only to the United States and Brazil, prompting concerns about its readiness to confront an inevitable surge that could overwhelm hospitals and test the country's feeble health care system. (AP Photo/Rafiq Maqbool)

People protest against coronavirus trials in Africa, outside Chris Hani Baragwanath Hospita in the township of Soweto in Johannesburg, South Africa, Saturday, July 18, 2020, The first clinical trial in Africa for a COVID-19 vaccine started last week in South Africa. Experts note a worrying level of resistance and misinformation around testing on the continent. (AP Photo/Themba Hadebe)

People walk along a skywalk to Chris Hani Bardgwanath Hospital in the township of Soweto in Johannesburg, South Africa, Saturday, July 18, 2020. (AP Photo/Themba Hadebe)

FILE - In this June 26, 2020, file photo Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci, center, speaks as Vice President Mike Pence, right, and Dr. Deborah Birx, White House coronavirus response coordinator, left, listen during a news conference with members of the Coronavirus task force at the Department of Health and Human Services in Washington. Fauci has warned that the United States could soon see 100,000 infections per day. “We haven’t even begun to see the end of it yet,” Fauci said during a talk hosted by Stanford University’s School of Medicine. (AP Photo/Susan Walsh, File)

Palestinian Hamas police officers wear protective suits as they take part in a simulation of possible coronavirus infections in Gaza City, Saturday, July 18, 2020. (AP Photo/Khalil Hamra)

Numerous beach visitors are at summery temperatures on the North Sea beach of Schillig, Germany, Saturday, July 18, 2020. (Mohssen Assanimoghaddam/dpa via AP)

In this photo released by the official website of the office of the Iranian Presidency, President Hassan Rouhani attends a meeting of the national headquarters of the fight against the COVID-19, in Tehran, Iran, Saturday, July 18, 2020. He estimated as many as 25 million Iranians could have been infected with the coronavirus since the outbreak's beginning, citing an Iranian Health Ministry study that has so far not been made public, the state-run IRNA news agency reported. Writing in Farsi at top right reads, "The Presidency." (Iranian Presidency Office via AP)

Two women look at the beach in Barcelona, Spain, Saturday, July 18, 2020. Police in Barcelona are closing access to a large area of the city's beaches due to the excess of sunbathers who decided to ignore the urgings of authorities to stay at home amid a resurgence of the coronavirus. (AP Photo/Emilio Morenatti)

An Indian paramilitary soldier walks back after performing religious rituals during the cremation of his colleague who died of COVID-19, at a crematorium in Srinagar, Indian controlled Kashmir, Saturday, July 18, 2020. India crossed 1 million coronavirus cases on Friday, third only to the United States and Brazil, prompting concerns about its readiness to confront an inevitable surge that could overwhelm hospitals and test the country's feeble health care system. (AP Photo/Dar Yasin)

Children wearing face masks to protect against the coronavirus sketch the Temple of Heaven in Beijing, Saturday, July 18, 2020. Authorities in a city in far western China have reduced subways, buses and taxis and closed off some residential communities amid a new coronavirus outbreak, according to Chinese media reports. They also placed restrictions on people leaving the city, including a suspension of subway service to the airport. (AP Photo/Mark Schiefelbein)