Immunizations

A mother, right, and her daughter, center, wear face masks to help curb the spread of the new coronavirus as they use free wifi to access an online lesson inside a temporary tent in Jakarta, Indonesia, Wednesday, Aug. 12, 2020. In some areas of the country, students are still yet to go to school due to the coronavirus. (AP Photo/Achmad Ibrahim)

Newly graduated teachers from the state of Michoacan, hang signs on the fence of the city's cathedral, as they protest against Mexico's President Andres Manuel Lopez Obrador, demanding better salaries and jobs, in Mexico City, Thursday, Aug. 13, 2020. With the country facing a deep economic recession, Mexican President Andres Manuel Lopez Obrador has pushed to reopen the economy quickly even as COVID-19 infections and deaths continue to rise. (AP Photo/Fernando Llano)

FILE - In this June 30, 2020 file photo, a woman wearing a mask passes a sign for Wall Street during the coronavirus pandemic. The S&P 500 is trading above its record closing high Wednesday, Aug. 12, after a rebound for stocks helped the index erase the last of the historic losses taken due to the pandemic. The index was up 1.6% in afternoon trading, with big technology stocks once again leading the way. (AP Photo/Mark Lennihan, File)

President Donald Trump arrives to speak at an event called "Kids First: Getting America's Children Safely Back to School" in the State Dining room of the White House, Wednesday, Aug. 12, 2020, in Washington. (AP Photo/Andrew Harnik)

In this May 2020 photo provided by Eli Lilly, researchers prepare cells to produce possible COVID-19 antibodies for testing in a laboratory in Indianapolis. Antibodies are proteins the body makes when an infection occurs; they attach to a virus and help it be eliminated. (David Morrison/Eli Lilly via AP)

In this handout photo taken on Thursday, Aug. 6, 2020, and provided by Russian Direct Investment Fund, a new vaccine is on display at the Nikolai Gamaleya National Center of Epidemiology and Microbiology in Moscow, Russia. Russian President Vladimir Putin's announcement that his country is the first to approve a coronavirus vaccine hasn't provoked the awe and wonder of the Soviet Union’s launch of the first satellite into orbit in 1957. Instead the announcement was met by doubts about the science and safety of the vaccine. (Alexander Zemlianichenko Jr/ Russian Direct Investment Fund via AP)

People wearing face masks to protect against the coronavirus ride an escalator past a sign of a nail salon at a shopping and office complex in Beijing, Tuesday, Aug. 11, 2020. Mainland China and semi-autonomous Hong Kong saw declines in their recent outbreaks Tuesday. (AP Photo/Mark Schiefelbein)

A news alert is displayed on a mobile phone in Christchurch, New Zealand, Tuesday, Aug. 11, 2020. New Zealand Prime Minister Jacinda Ardern said Tuesday that authorities have found four cases of the coronavirus in one Auckland household from an unknown source, the first cases of local transmission in the country in 102 days. (AP Photo/Mark Baker)

FILE In this file photo taken on Thursday, July 9, 2020, Russian President Vladimir Putin gestures during a video conference meeting at the Novo-Ogaryovo residence outside Moscow in Moscow, Russia. Putin says that a coronavirus vaccine developed in the country has been registered for use and one of his daughters has already been inoculated. Speaking at a government meeting Tuesday, Aug. 11, 2020, Putin said that the vaccine has proven efficient during tests, offering a lasting immunity from the coronavirus. (Alexei Druzhinin, Sputnik, Kremlin Pool Photo via AP, File)

Desks are spaced out in a classroom at Aikahi Elementary School in Kailua, Hawaii on Tuesday, July 28, 2020. While Hawaii has one of the lowest rates of cases per capita in the country and many of its schools have open-air campuses, the challenges of returning kids full time to classrooms may still be insurmountable. (AP Photo/Jennifer Sinco Kelleher)