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

The latest:

A slew of nations moved to stop air travel from southern Africa on Friday in reaction to news of a new, potentially more transmissible coronavirus variant.

"The last thing we need is to bring in a new variant that will cause even more problems," said German Health Minister Jens Spahn, amid a massive spike in cases in the 27-nation European Union.

"Early indications show this variant may be more transmissible than the delta variant and current vaccines may be less effective against it," British Health Secretary Sajid Javid told lawmakers. "We must move quickly and at the earliest possible moment."

Within a few days of the discovery of the new variant, it has already impacted on a jittery society that is sensitive to bad COVID-19 news, with deaths around the globe standing at over five million.

The coronavirus evolves as it spreads, and many new variants, including those with worrying mutations, often just die out. Scientists monitor for possible changes that could be more transmissible or deadly, but sorting out whether new variants will have a public health impact can take time. Currently identified as B.1.1.529, the new variant has also been found in Botswana and Hong Kong in travellers from South Africa.

The WHO's technical working group is to meet Friday to assess the new variant and may decide whether to give it a name from the Greek alphabet. 

Israel, one of the world's most vaccinated countries, announced Friday that it has detected the country's first case of the new variant in a traveller who returned from Malawi. The traveller and two other suspected cases have been placed in isolation. The country said all three are vaccinated but that it is currently looking into their exact vaccination status.

The World Health Organization cautioned not to jump to conclusions too fast.

Speaking before the EU announcement, Dr. Michael Ryan, the head of emergencies at the WHO, said that "it's really important that there are no knee-jerk responses."

"We've seen in the past, the minute there's any kind of mention of any kind of variation and everyone is closing borders and restricting travel. It's really important that we remain open, and stay focused," Ryan said.

It quickly fell on deaf ears.

The U.K. announced that it was banning flights from South Africa and five other southern African countries effective at noon on Friday, and that anyone who had recently arrived from those countries would be asked to take a coronavirus test.

In a statement posted online Friday, South Africa said that while it respects the right of other countries to protect their citizens, "the U.K.'s decision to temporarily ban South Africans from entering the U.K. seems to have been rushed as even the World Health Organization is yet to advise on the next steps."