People infected with the earliest version of the Omicron variant of coronavirus at the start of the year could be reinfected with later versions of Omicron, as new findings suggest that even being vaccinated and boosted may not provide protection.
Vaccinated patients with Omicron BA.1 breakthrough infections developed antibodies that could neutralise that virus plus the original SARS-CoV-2 virus, but researchers from China reported on Friday in Nature that sublineages circulating now have mutations that evade those antibodies.
A city of 650,000 had zero COVID deaths until Sunday. Omicron’s most transmissible subvariant yet finally overtook its defenses
Macau, a semiautonomous region off the coast of southern China known for its casinos, recorded its first-ever deaths from COVID-19 after two elderly people with underlying conditions—a 100-year-old and a 94-year-old—succumbed to the disease on Sunday. The deaths break Macau's streak of being one of the only cities on earth to not record a death from COVID-19 since the pandemic broke out two and a half years ago and went on to kill 6.3 million people around the world. Globally, 1,500 people are still dying from COVID-19 daily.
“I think there was hope we wouldn’t have another wave until the fall, but the wave is starting now,” said Sally Otto, who advises masking up again, along with getting booster shots.
Otto, an evolutionary biologist and mathematical modeller at the University of British Columbia, presented her data to the main North American meeting of evolutionary biologists in Cleveland, Ohio, this past week.
You'd be forgiven for letting out a weary sigh. There's so much going on from Ukraine to the rising cost of everything - and now Covid is rearing its ugly head again.
The latest statistics show the number of people infected in the UK has more than doubled since the start of June with around 2.3 million people testing positive. You probably know someone who's had it.
It’s time to bring back indoor mask-wearing requirements, some health professionals say amid concerns of a potential surge in COVID-19 cases this summer.
In fact, according to Alberta emergency physician Chuck Wurster, public-health authorities across the country dropped the mandate prematurely.
The federal government announced Wednesday all existing border restrictions to enter Canada will remain in place until at least Sept. 30.
That means foreign travellers will still need to provide proof of being fully vaccinated to enter the country and unvaccinated Canadians or permanent residents will need to provide a molecular COVID-19 test taken prior to entering and quarantine for 14 days upon arrival.
For some people with COVID-19, the pain in their skull is so intense they consider a trip to the emergency room.
For others, it might come in throbbing waves or feel like a constant mild ache; it could be gone within minutes of taking painkillers or still be there months later.
Air Canada (AC.TO) flew more than 100,000 passengers in one day for the first time since the COVID-19 pandemic hit, another sign that the airline's recovery is underway as travel demand returns.
The official list of Covid-19 symptoms has been expanded to include nine new signs of illness.
The extension of the symptoms list to include ailments such as sore throat, fatigue and headache could help to reduce infections, one expert said.