The Latest: US deaths predicted at nearly 300,000 by Dec. 1

In this July 31, 2020 file photo, Dr. Marta Ruberte prepares to visit an elderly patient at home in Sant Sadurní d'Anoia, Catalonia region, Spain. In contrast to the darkest weeks of March and April, when the virus ripped through Spain's elderly in nursing homes and pushed the country's hospitals to the breaking point, the pressure is now on Spain's neighborhood health clinics. (AP Photo/Felipe Dana)

In this photo posted on Twitter, students crowd a hallway, Tuesday, Aug. 4, 2020, at North Paulding High School in Dallas, Ga. The 30,000-student suburban Paulding County school district in suburban Atlanta resumed classes Monday with 70% of students returning for in-person classes five days a week, days after the principal at North Paulding announced some members of the football team had tested positive for COVID-19. The district says it is encouraging mask use, but isn't requiring it. (Twitter via AP)

Minnesota Gov. Tim Walz answers questions during a press conference Tuesday, Aug. 4, 2020, during a stop at Central Minnesota Council on Aging offices in Sartell, Minn. (Dave Schwarz/The St. Cloud Times via AP)

Governor Kristi Noem gives an update on back to school planning on Tuesday, July 28, at John Harris Elementary School in Sioux Falls, S.D. (Erin Bormett/The Argus Leader via AP)

Norwegian cruise ship MS Roald Amundsen moored in Tromso, Norway, Monday Aug. 3, 2020. After 40 people, including four passengers and 26 crew members on the Norwegian cruise ship have been tested positive for the coronavirus, the operator says it was stopping for all cruises with its three vessels. The 40 people were admitted to the University Hospital of North Norway in Tromsoe, north of the Arctic Circle, where the empty ship has docked. (Terje Pedersen/NTB Scanpix via AP)

Recently filled graves are seen in the Olifantsveil Cemetery outside Johannesburg, South Africa, Wednesday Aug. 5, 2020. The frequency of burials in South Africa has significantly increased during the coronavirus pandemic, as the country became one of the top five worst-hit nation. New infection numbers around the world are a reminder that a return to normal life is still far from sight. (AP Photo/Jerome Delay)

CEO of Hurtigruten, Daniel Skjeldam during a press conference after the announcement an outbreak of coronavirus infection aboard the expedition cruise ship MS Roald Amundsen. The Norwegian cruise ship line Hurtigruten has halted all trips and apologised for procedural errors, after 5 passengers and 36 crew members tested positive for COVID-19. In response, Norway has banned all cruise ships from docking for two weeks. (Annika Byrde / NTB scanpix via AP)

Clinical Research Nurse Aneta Gupta labels blood samples from volunteer Yash during the Imperial College vaccine trial, at a clinic in London, Wednesday, Aug. 5, 2020. Scientists at Imperial College London are immunizing hundreds of people with an experimental coronavirus vaccine in an early trial after seeing no worrying safety problems in a small number vaccinated so far. (AP Photo/Kirsty Wigglesworth)

People wearing face masks to help curb the spread of the coronavirus ride mopeds in Hanoi, Vietnam on Thursday, Aug. 6, 2020. Vietnamese health official said on Thursday the COVID-19 outbreak would peak in the coming ten days as the country reported another death and a score of new infections. (AP Photo/Hau Dinh)

A medical staff checks the temperature of a patient during lockdown due to the continuing spread of the coronavirus in Melbourne, Thursday, Aug. 6, 2020. Victoria state, Australia's coronavirus hot spot, announced on Monday that businesses will be closed and scaled down in a bid to curb the spread of the virus. (AP Photo/Andy Brownbill)

People walk near the Eiffel Tower, in Paris, Monday, May 11, 2020. The French began leaving their homes and apartments for the first time in two months without permission slips as the country cautiously lifted its lockdown. Clothing stores, coiffures and other businesses large and small were reopening on Monday with strict precautions to keep the coronavirus at bay. (AP Photo/Christophe Ena)

FILE - In this July 22, 2020, file photo, a man takes a coronavirus test at a mobile site at the Charles Drew University of Medicine and Science, in Los Angeles. California has stopped updating a list of counties facing more restrictions on businesses and schools after a problem in the state's coronavirus testing database has led to an undercount. (AP Photo/Marcio Jose Sanchez, File)

Waiters prepare the terrace of a restaurant in order to respect distancing measures in Paris, Monday, June 1, 2020, as France gradually lifts its Covid-19 lockdown. France is reopening tomorow its restaurants, bars and cafes as the country eases most restrictions amid the coronavirus crisis. (AP Photo/Christophe Ena)

Israelis watch a movie from their car In Tel Aviv, Israel, Wednesday, Aug. 5, 2020. As movie theaters in Israel remain shut because of the coronavirus outbreak, Tel Aviv is bringing an old drive-in back to life for a few days this summer. (AP Photo/Sebastian Scheiner)

Face coverings hang on hooks along with keys by the front door of the Adamus family on Monday, Aug. 3, 2020, in Dallas, Ga. The Adamus children are among tens of thousands of students in Georgia and across the nation who were set to resume in-person school Monday for the first time since March. (AP Photo/Brynn Anderson)