Coronavirus: What's happening in Canada and around the world on Saturday

The latest:

• U.S. vaccination requirement for air passengers worries Canadians with mixed vaccines.

• A Canadian COVID-19 study that turned out to be wrong has spread like wildfire among anti-vaxxers.

• Bizarre legal theory making anti-vaccine movement more extreme, experts warn.

• 'I feel more like a bouncer than a hostess': Front-line workers shoulder burden of vaccine mandates.

• Have a coronavirus question or news tip for CBC News? Email: Covid@cbc.ca.

New York City schools have been temporarily blocked from enforcing a vaccine mandate for theirteachers and other workers by a federal appeals judge just days before it was to take effect.

Workers in the nation's largest school system were to be required to show vaccination proof starting Monday. But late Friday, a judge for the 2nd U.S. Circuit Court of Appeals granted a temporary injunction sought by a group of teachers pending review by a three-judge panel, which will take up the motion on Wednesday.

Department of Education spokesperson Danielle Filson said officials were seeking a speedy resolution in court.

"We're confident our vaccine mandate will continue to be upheld once all the facts have been presented, because that is the level of protection our students and staff deserve," Filson said in an email.

The New York Post reported that the department sent an email to principals on Saturday morning saying they "should continue to prepare for the possibility that the vaccine mandate will go into effect later in the week."

Mayor Bill de Blasio announced in August that about 148,000 school employees would be required to get at least a first dose of the COVID-19 vaccineby Sept. 27. The policy covers teachers, along with other staffers, such as custodians and cafeteria workers.

It's the first no-test-option vaccination mandate for a broad group of city workers in themost populous city in the United States. And it mirrors a similar statewide mandate for hospital and nursing home workers set to go into effect on Monday.

As of Friday, 82 per centof department employees have been vaccinated, including 88 per centof teachers.

Even though most school workers have been vaccinated, unions representing New York City principals and teachers warned that could still leave the onemillion-student school system short of as many as 10,000 teachers, along with other staffers.

De Blasio has resisted calls to delay the mandate, insisting the city was ready.

"We've been planning all along. We have a lot of substitutes ready," the Democrat said in a radio interview on Friday.

"A lot is going to happen between now and Monday, but beyond that, we are ready, even to the tune of, if we need thousands, we have thousands."

What's happening across Canada

WATCH | Canada's top doctor onCOVID-19 vaccines for children:

U.S. CDC recommends 3rd COVID-19 vaccine doses for millions of Americans

3 years ago

Duration 4:29

An advisory panel at the U.S. Centers for Disease Control and Prevention has recommended a third dose of the Pfizer-BioNTech COVID-19 vaccine for Americans aged 65 and older, as well as for some adults with underlying medical conditions that put them at risk of severe disease.

• Run don't walk to get your flu shot,says B.C. infectious disease expert.

• Justice rules unvaccinated jurors won't be able to serve in upcoming Calgary trial.

• Saskatchewan deletes vaccine QR codes while privacy glitch gets fixed

• Legal battles brewing in Manitoba between parents divided overvaccinations.

• Ontario sees640 infections, 10 moredeathsas loosened capacity limits take effect.

• QuebecHealth Ministry is warning residents about fake vaccination passport apps.

• N.B. logs 61cases, additional death as province re-enters state of emergency.

• P.E.I. health officials advise Islanders to avoid non-essential travel.

• Parents group says exposure notifications for N.S. schools lack transparency

• N.L. reports 14 new caseas 80 per cent of eligible residents now fully vaccinated.

• N.W.T. offering up to $5,000 for businesses impacted by recenthealth measures.

What's happening around the world

As of Saturday , more than231.2million cases of COVID-19 had been reported worldwide, according to Johns Hopkins University's case tracking tool, which collects data from around the world. The reported global death toll stood at more than 4.7 million.

InAfrica, South Africa has sent a train into one of the country's poorest provinces, carryingCOVID-19 vaccines and doctors and nurses to administer them. The vaccine train, named Transvaco, is on a three-month tour through Eastern Cape province and will stop at seven stations for two weeks at a time to vaccinate people.

In Europe, several hundred protesters gathered in the Netherlands on Saturday to march against the introduction of a "corona pass" as proof of COVID-19 vaccination became compulsory to get into bars, restaurants, theatresand other venues. The new requirement to show the pass, or a recent negative coronavirus test, coincided with the lifting of almost all physical-distancing measures in the country, where 72 per centof the population has received at least one vaccine dose.

In the Americas, Brazilian President Jair Bolsonaro's son and two members of his cabinet said on Friday that they had tested positive for COVID-19, bringing to four the number of close aides diagnosed since the far-right leader's trip to the United Nations.The news comes three days after Health Minister Marcelo Queiroga announced that he had tested positive.Queiroga remained behind in the United States to quarantine.

In Asia,South Korea's daily increase in coronavirus infections exceeded 3,000 for the first time since the start of the pandemic.Officials believe the virus spread further beyond the capital region during the Chuseok holidays, the Korean version of Thanksgiving thatbegan on the weekend and continued through Wednesday a period during which millions usually travel across the country to meet relatives. Officials say the country may see even bigger daily jumps next week as more people get tested.