Coronavirus: What happened in Canada and around the world on Dec. 29

The latest:

• Most provinces and territories, including B.C., Alberta,Quebec, Ontario, Manitoba, N.B.,N.L., P.E.I. and Nunavut, report record-high single-day COVID-19 case numbers.
  
• Manitoba reaches deal with private lab to expand COVID testing capacity.
  
• British Columbiawill phase in thereturn to school, with all students back by Jan. 10.
  
• Classes set to resume at Alberta's K-12 schools as Omicron cases climb.
  
• World junior hockey tournament cancelled as more players test positive for COVID-19.
  
• Families want apology for loved ones who died after COVID-19 exposure in hospital.
  
• U.S. move to shorten COVID-19 isolation stirs confusion, doubt.
  
• Track how many people have been given theCOVID-19 vaccine across Canada

Daily COVID-19 infections have hit record highs in the United States and swaths of Europe and Australia as the new Omicron variant of the coronavirus races out of control, keeping workers at home and overwhelming testing centres.

Almost two years after China first reported a cluster of "viral pneumonia" cases in the city of Wuhan, the regularly mutating coronavirus is wreaking havoc in many parts of the world, forcing governments to rethink quarantine and test rules.

Although some studies have suggested the Omicron variant is less deadly than some of its predecessors, the huge numbers of people testing positive mean that hospitals in some countries might soon be overwhelmed, while businesses might struggle to carry on operating because of workers having to quarantine.

"Delta and Omicron are now twin threats driving up cases to record numbers, leading to spikes in hospitalization and deaths," WHO director general Tedros Adhanom Tedros told a news briefing on Wednesday.

"I am highly concerned that Omicron, being highly transmissible and spreading at the same time as Delta, is leading to a tsunami of cases."

WATCH | WHO director warns countries not to become complacent about Omicron:

WHO warns against Omicron complacency as European countries post record daily cases

3 years ago

Duration 2:11

World Health Organization director general Tedros Adhanom Ghebreyesus is warning against downplaying Omicron's seriousness as major nations in Europe, along with the U.S., announce record-breaking daily COVID-19 case counts.

Record high cases

Global COVID-19 infections hit a record high over the past seven-day period, Reuters data showed on Wednesday, as the Omicron variant raced out of control and governments wrestled with how to contain its spread without paralyzing fragile economies.

Almost 900,000 cases were detected on average each day around the world between Dec. 22 and 28, with myriad countries posting new all-time highs in the previous 24 hours, including the United States, Australia, many in Europe and Bolivia.

Health officials in Newfoundland and Labrador, New Brunswick, P.E.I., N.B., Manitoba, Alberta, British Columbia, Quebec and Ontario all confirmed single-day highs on Wednesday. Nunavutsaw 37 new cases a single-day high for the territory, which has just one hospital.

• INTERACTIVE |Where is the coronavirus pandemic getting better or worse?

New daily infections in Australia spiked to nearly 18,300on Wednesday, eclipsing the previous pandemic high of about11,300 hit a day earlier.

Australian Prime Minister Scott Morrison said his country needs"a gear change" to manage overburdened laboratories, with long walk-in and drive-in queues reported in a number of areas.

French Health Minister Olivier Veran told lawmakers Wednesday that the country was seeing a "dizzying" rise in cases, with 208,000 reported in the space of 24 hours a national and European record.

Britain reported 183,037 COVID-19 cases on Wednesday, a new record and over 50,000 more than the previous-highest figure registered just a day earlier, government statistics showed. Ireland, too, reported record cases on Wednesday, with more than 16,000 new infections.

A number of governments were also increasingly worried aboutthe huge numbers of people being forced into self-isolation because they had been in contact with a coronavirus sufferer.

"We just can't have everybody just being taken out of circulation because they just happen to be at a particular place at a particular time," Australia's Morrison told reporters.

Italy on Wednesday scrapped self-isolation rules for those coming into contact with someone testing positive for coronavirus providing they have had a booster shot, have recently recovered or been vaccinated.

However, China showed no let-up in its policy of zero tolerance to outbreaks, keeping 13 million people in the city of Xi'an under rigid lockdown for a seventh day as new COVID-19 infections persisted, with 151 cases reported on Tuesday.

-From Reuters and CBC News, last updated at 7p.m. ET

What's happening across Canada

WATCH |Nunavut seeks federal help as coronavirus cases climb:

Nunavut seeks federal help as coronavirus cases surge

3 years ago

Duration 1:01

Nunavut Premier P.J. Akeeagok says the territory's health-care capacity is reaching a 'breaking point' and he's looking to Ottawa for help as COVID-19 spreads rapidly.(Emma Tranter/The Canadian Press)

For more details on the situation in your province and territory including the latest on hospitalizations and ICU capacity, as well as local testing issues click through tothe local coverage below.

In the North,Nunavuton Wednesday reported 37 new cases, a new single-day high for the territory. The premier said the territory, which is currently living under tough restrictions,has active cases in eight communities.

Nunavut Premier P.J. Akeeagokon Wednesday said the territory is approaching a "breaking point" in terms of health-care capacity. He said he is working with staff to request additional workersand supplies from the federal government, noting that the territory also has an urgent need for more housing to allow people to safely isolate at home.

Health officials inYukon reported 27 cases on Wednesday from over the past five days, whiletheNorthwest Territories reported 68 new cases since Dec. 24.

In Central Canada, Quebecon Wednesday reported 13,149 new cases of COVID-19, yet another single-day high. The province also reported 10 additional deaths.

The update came a day after Health Minister Christian Dub announcedmeasures that would allow certain health-care workers to stay on the job despite testing positive for the virus.The province had little choice but to change its isolation protocols, he said, due to the meteoric spread of the Omicron variant, which has created staff shortages.

"We have no choice," Dub said at a briefing, calling the government's plan the "best alternative" compared to not providing care.

Ontarioon Wednesday saw a single-day high of 10,436 new cases of COVID-19, as well as three additional deaths.

• Ontario halts visits, social trips for long-term care residents amid Omicron spread

• Toronto's food banks double down on safety in response to Omicron

• Ontarians need QR code to prove vaccination next week. Here's what you need to know

In Atlantic Canada,Newfoundland and Labradorhealth officials reported 312 new cases of COVID-19 on Wednesday, though they noted there are still no COVID-19 patients in hospital.

Provincial officials said that when students return to school on Jan. 4, it will be to virtual learning, with the situation to be reassessed weekly.

"Now is the time for precaution, not for panic," Premier AndrewFurey said at a briefing on Wednesday.

Health officials inNova Scotia reported 586 new cases on Wednesday, whilePrince Edward Islandhad a record-high 129 cases.

New Brunswick also had a record-high number of daily new cases, with 486 reported.

• What you need to know about Nova Scotia's new COVID-19 testing rules

In the Prairie provinces,Manitobasaw another record daily high of 947cases of COVID-19on Wednesday, with health officials reporting one additional death. The province hasreached a deal with a private lab to increase COVID-19 testing capacity by 30 per cent.

Saskatchewan reported 293 new casesand fourdeaths on Wednesday, whileAlberta alsorecorded a new daily record with 2,775 cases and 11 additional deaths. The surge in cases has forced theprovince tochangeits criteria for obtaining a PCR test to confirm the COVID-19 virus.

• Mad scramble for rapid antigen tests in Manitoba raises new questions about pandemic response

• 'I still haven't grieved': Families want apology for loved ones exposed to COVID-19 in hospital who died

• Restaurant owners choosing to shut doors as COVID-19 surges in Manitoba

• Wastewater samples in Saskatoon show massive increase in the Omicron variant

In British Columbia, health officials reported 2,944 new cases on Wednesday, a new daily record, along with five deaths since Dec. 24.Provincial Health OfficerDr. Bonnie Henry said she is recommending a phased return to school for students in K-12, with some childrenof essential workers or with special needs going back as planned on Jan. 3 or 4, with a full return for all students byJan. 10.

"This will give us time to add additional protocols to reduce crowding, and stagger times for recesses," she said,"those things that we did early on that we know can reduce the potential for transmission within the settings."

Education Minister Jennifer Whiteside said there will also be enhanced safety plans for schools.

-From CBC News and The Canadian Press, last updated at 7p.m. ET

What's happening around the world

As of Wednesday evening, roughly284.4millioncases of COVID-19 had been reported worldwide, according to Johns Hopkins University's COVID-19 tracker. The reported global death toll stood at more than 5.4 million.

InEurope,Italy surged to a record 98,030 new cases of COVID-19 infections Wednesday, an increase of 25 per centin one day.

In theAmericas,U.S. Centers for Disease Control and Prevention director Rochelle Walensky said Wednesday that average coronavirus cases in the countrythis week have increased 60 per centover the previous weeka reflection, she said, "of the exceptionally transmissible Omicron variant."

"This virus has proven its ability to adapt quickly and we must adapt with it," Walensky said during the Biden administration's COVID-19 task force briefing.

She pointed in particular to the CDC's decision to reduce quarantine time for asymptomatic individuals who test positive for COVID-19to five days from 10. After five days, the risk of transmission "substantially decreases," she said, and the reduced quarantine period reflectsan effort to "provide updated recommendations using science to ease the burden of lengthy isolation and quarantine recommendations."

InAfrica, South Africa on Tuesday reported 7,216 new cases of COVID-19 and 25 additional deaths.

In theMiddle East, Saudi Arabia on Tuesday reported602 confirmed cases of COVID-19, with one additional death.

Daily infections in the United Arab Emirates, the Gulf region's tourism and commercial hub, rose above 2,000 for the first time since June.

In theAsia-Pacificregion,Thai authorities warned that residents should brace for a potential jump in coronavirus cases after classifying the country's first cluster of the Omicron variant as a "super-spreader" incident.

-From Reuters, The Associated Press and CBC News, last updated at 5:45 p.m. ET