Multiple bridges in Calgary shut down for police incident
Calgary police have shut down a number of bridges into and out of the downtown core as officers deal with a distraught individual.
What is a COVID-19 vaccine “breakthrough” case?
It's when a fully vaccinated person gets infected with the coronavirus. A small number of such cases are expected and health officials say they're not a cause for alarm.
COVID-19 vaccines work by teaching the body to recognize the virus. So if you're exposed to it after vaccination, your immune system should be ready to spring into action and fight it.
In studies, the two-dose COVID-19 vaccines by Pfizer and Moderna were around 95% effective at preventing illness, while the one-shot Johnson & Johnson shot was 72% effective, though direct comparisons are difficult. So while the vaccines are very good at protecting us from the virus, it's still possible to get infected with mild or no symptoms, or even to get sick.
If you do end up getting sick despite vaccination, experts say the shots are very good at reducing the severity of the illness - the main reason to get vaccinated.
Most people with breakthrough infections experience mild illness, said Dr. William Moss, a vaccine expert at the Johns Hopkins Bloomberg School of Public Health.
In the U.S., people who weren't vaccinated make up nearly all hospitalizations and deaths from COVID-19.
It's difficult to determine why any particular breakthrough case happens. How much of the virus you're exposed to could be a factor, Moss said. Our individual immune systems will also affect how well we respond to the shots. Some people, for example, have health conditions or take medications that could make their immune systems less responsive to the vaccines.
People might also have been exposed to the virus before the shots took full effect. Though less likely, they may have received a dose that was improperly stored or administered, Moss said.
The Centers for Disease Control and Prevention notes variants could be factors in some breakthrough cases, though evidence so far indicates the vaccines used in the U.S. are protective against them.
Health officials are also watching for signs that breakthrough cases are rising, which could signal that protection from the vaccines is fading and boosters are needed.
Calgary police have shut down a number of bridges into and out of the downtown core as officers deal with a distraught individual.
A judge has ordered a Quebec man to stand trial on charges of first-degree murder in the deaths of two children killed when a bus rammed into a Montreal-area daycare last year.
Ontario released its annual sunshine list Thursday afternoon, noting that the largest year-over-year increases were in hospitals, municipalities, and post-secondary sectors.
Former Humboldt Broncos goaltender and bus crash survivor Jacob Wassermann has qualified Canada for a rowing event for the 2024 Paralympic games in Paris.
Former U.S. President Donald Trump is officially selling a copy of the Bible themed to Lee Greenwood’s famous song, 'God Bless the USA.' But the concept of a Bible covered in the American flag has raised concern among religious circles.
Genetic analysis has shed light on a long-standing mystery surrounding the fates of U.S. President George Washington's younger brother Samuel and his kin.
Canadians will be missing out on a sweet new partnership between McDonald's and Krispy Kreme, which will see doughnuts available at McDonald's locations across the U.S. by the end of 2026.
A Calgary police officer has been charged after allegedly assaulting a handcuffed man two years ago.
The federal government is launching a new loan program to help child-care providers in Canada expand their spaces, and will be extending further student loan forgiveness and training options for early childhood educators, Prime Minister Justin Trudeau announced Thursday.
B.C. conservation officers recently seized a nine-foot-long Burmese python from a home in Chilliwack.
A New Brunswicker will go to bed Thursday night much richer than he was Wednesday after collecting on a winning lottery ticket he let sit on his bedroom dresser for nearly a year.
The Ontario government is introducing changes to auto-insurance, but some experts say the move is ill-advised.
A Toronto restaurant introduced a surprising new rule that reduced the cost of a meal and raised the salaries of staff.
Newfoundland’s unique version of the Pine Marten has grown out of its threatened designation.
A Toronto man is out $12,000 after falling victim to a deepfake cryptocurrency scam that appeared to involve Prime Minister Justin Trudeau.
It started small with a little pop tab collection to simply raise some money for charity and help someone — but it didn’t take long for word to get out that 10-year-old Jace Weber from Mildmay, Ont. was quickly building up a large supply of aluminum pop tabs.
There’s a group of people in Saskatoon that proudly call themselves dumpster divers, and they’re turning the city’s trash into treasure.
Ontario is facing a larger than anticipated deficit but the Doug Ford government still plans to balance its books before the next provincial election.