A Uganda Olympic team member tested positive for COVID-19 upon arrival in Japan late Saturday, officials said.

Why it matters: Japan's government has faced criticism for vowing to host the Tokyo Games next month as coronavirus cases rise. The Ugandan team is the second to arrive in Japan after the Australian women's softball players, and this is the first COVID-19 infection detected among the Olympic athletes, Al Jazeera notes.

Demonstrators took to the streets in at least 22 of Brazil’s 26 states to protest President Jair Bolsonaro's handling of the pandemic — as deaths from COVID-19 in the country surged past 500,000 Saturday, per AP.

The big picture: Brazil has the world's second-highest coronavirus death toll and third-highest number of reported cases. Only 12% of the country's population has been vaccinated against the virus, AP notes.

1. Vaccines: Biden says 300M COVID-19 shots administered in U.S. — The states that have vaccinated at least 70% of adults.
2. Economy: Economic fears during the COVID comeback have been largely transitory.
3. Politics: Republicans push to sanction Chinese officials over Wuhan lab probe.
4. World: Olympic public viewing sites in Tokyo canceled, governor says.
5. Poll: Americans are restarting pre-coronavirus daily activities.
6. Variant tracker: Where different strains are spreading.

Tokyo Governor Yuriko Koike on Saturday said that all public viewing during this summer's Olympics will be canceled due to the COVID-19 pandemic, the Japan Times reports.

The state of play: After meeting with Japanese Prime Minister Yoshihide Suga, Koike told reporters that the locations where viewings were scheduled will instead be used as vaccination sites.

President Biden announced Friday that 300 million coronavirus shots have been administered in the United States in the last 150 days.

The big picture: More than 175 million Americans have gotten at least one COVID-19 vaccine shot and infection rates, as well as deaths, have decreased by more than 90%, according to the White House.

• The president's announcement comes less than one month before July 4, which Biden had previously set as the goal to get 160 million Americans fully vaccinated and 70% to have received at least one shot.

Canada extended restrictions Friday that bar nonessential U.S. travel until July 21, per Reuters.

The big picture: Travel restrictions between the two countries were first imposed in March 2020 and have been updated in 30-day increments, per Reuters.

Americans are relaxing COVID-19 precautions and resuming activities they did before the virus shut down parts of the country in early 2020, according to a new AP-NORC Center for Public Affairs Research survey of 1,125 adults.

Why it matters: Almost all states have lifted most of their restrictions as vaccination rates have steadily increased throughout the country, and as new coronavirus cases have dropped to the lowest level since the start of the pandemic.

The Palestinian Authority called off the COVID vaccine deal with the new Israeli government after determining the does were too close to their expiration date, Reuters reports.

The latest: Israel had agreed to transfer 1.2 million doses of Pfizer to the Palestinian Authority in exchange for the fresh Pfizer shipment Palestinians were expected to receive in October. But on Friday Palestinian officials said the doses from Israel were set to expire soon and did not meet the necessary standards.

The curbing of the pandemic in the U.S. means the return of dinner parties, movie dates and brunch. But it also means the return of things you don't really want to do.

What's happening: Many of us spent over a year stuck in our homes by default — not having to decline social engagements we weren't keen on. Now it's time to re-learn the fine art of saying "no."

Handshakes were one of the first habits to go when the COVID-19 pandemic began last year, but with vaccination rates rising, you may find yourself confronting an outstretched hand again soon.

Why it matters: Whether firm or floppy, handshakes were a near-universal greeting in the West for strangers, business contacts and casual acquaintances. As people emerge from their pandemic shell, it's worth considering the act again — or picking up a new habit.