Will one dose of a two-dose COVID-19 vaccine protect me?
Yes, but not nearly as much as if you had both doses. Experts recommend getting fully vaccinated, especially with the emergence of worrisome coronavirus mutations such as the Delta variant first identified in India.
The COVID-19 vaccines rolling out globally were developed to target the original version of the virus detected in late 2019. While they seem to work against newer versions, there's a concern the shots eventually might lose their effectiveness if variants evolve enough.
With the Delta variant, a study by British researchers found people were well protected when they got both doses of either the AstraZeneca or Pfizer-BioNTech vaccines. But with only one dose, protection was significantly reduced.
To stem the spread of the Delta variant in the United Kingdom, British Prime Minister Boris Johnson recently delayed the lifting of remaining restrictions to get more people the full two doses.
Health officials are also concerned about the dozens of countries that still don't have enough supply secured to distribute second doses within the recommended time frame.
World Health Organization chief Tedros Adhanom Ghebreyesus has said vaccinations with only one dose won't be enough to stop outbreaks fueled by new variants and that people should maintain social distancing and other measures until more of the population is fully vaccinated.
The second dose of a two-dose vaccine is critical because it's what "really gives a boost to the immune system so that the antibody response is very strong," says Dr. Soumya Swaminathan, WHO's chief scientist.
People across Florida were given notice Sunday that Milton, for now just a tropical storm off the coast of Mexico, could intensify rapidly into a major hurricane before slamming midweek into the storm-ravaged Gulf Coast.
Travelling on a budget can be stressful, but there are ways you can ensure you're getting the best deal on flights as the holiday season approaches.
A Toronto police officer has been arrested after allegedly stealing three bottles of alcohol from a store.
Police on Vancouver Island have made an arrest in the case of a 78-year-old woman found dead in her home almost two years ago.
Donald Trump's fourth scheduled stop in eight days in Wisconsin is a sign of his increased attention as Republicans fret about the former president's ability to match the Democrats' enthusiasm and turnout machine.
New data raises questions about the drinks people consume and the potential risks associated with them, according to researchers at Galway University in Ireland, in partnership with Hamilton鈥檚 McMaster University.
A Liberal MP and a Conservative MP will be part of a team delivering speeches at an event in Ottawa commemorating the one year anniversary of the attacks on Oct. 7.
Police released the identities of the mother and daughter who were killed after a fire tore through a 160-year-old building in Old Montreal on Friday.
Financial strain can be an uncomfortable burden to bear, especially if you feel that you're doing as much as you can and are barely managing to stay afloat. Personal finance contributor Christopher Liew shares some tips for managing financial stress and digging your way out of debt.
According to a survey on recent alcohol consumption, younger Canadians are more likely to have not had a drink in the past week. For those interested in slowing or stopping their alcohol consumption, there's a phrase: 'sober curious.'
New data from the Insurance Bureau of Canada (IBC) shows that even though claims for auto theft dropped in the first half of 2024 compared to their 2023 peak, the rates of reported theft remain well above those of years prior.
A massive fire broke out in downtown Langley Saturday morning, destroying a restaurant and forcing several other businesses to close.
A driver suffered only minor injuries after going airborne in a residential neighbourhood in Maple Ridge, B.C., on Friday, the car eventually landing on its roof in someone鈥檚 backyard.
Three people were taken to hospital after a crash between a pickup truck and a car in a rural part of Ottawa's south end on Saturday afternoon.
Demonstrators converged on downtown Ottawa Saturday afternoon as part of a global day of action to protest Israel's military actions in the Middle East.
Donald Trump's fourth scheduled stop in eight days in Wisconsin is a sign of his increased attention as Republicans fret about the former president's ability to match the Democrats' enthusiasm and turnout machine.
It was a year ago when Jomana Siddiqui visited Lebanon, where her father was born 鈥 and is now buried. She planned to return there soon; this time, she thought, she would take her two teenage daughters.
Being an armchair detective has turned into an American obsession, fueled by an abundance of true-crime content in podcasts and television series. But some of those projects have sparked actual legal developments.
A French judge in the trial of dozens of men accused of raping an unconscious woman whose now former husband had repeatedly drugged her so that he and others could assault her decided on Friday to allow the public to see some of the video recordings of the alleged rapes.
French authorities said four migrants, including a two-year-old child, died Saturday in two separate incidents as they attempted to cross the English Channel toward Britain.
A rural Colorado county courthouse beefed up security Friday after threats were made against staff and a judge who sentenced former county clerk Tina Peters to nearly nine years behind bars for her role in a data breach scheme catalyzed by the lie that the 2020 election was stolen from former President Donald Trump.
NDP House Leader Peter Julian says the Bloc Quebecois has not initiated conversations with his party to potentially bring down the minority Trudeau government, as Leader Yves-Francois Blanchet has threatened.
A Liberal MP and a Conservative MP will be part of a team delivering speeches at an event in Ottawa commemorating the one year anniversary of the attacks on Oct. 7.
Prime Minister Justin Trudeau repeatedly reiterated calls for a ceasefire in the Middle East on Saturday as he blamed Hamas, Hezbollah and Israel for a staggering number of civilian deaths.
Rwandan health authorities will begin a vaccine study against the Marburg hemorrhagic fever, officials said Sunday, as the East African country tries to stop the spread of an outbreak that has killed 12 people.
Bruzzese came down with COVID-19 in February 2023, and received her injection at the end of March. 鈥淏eing able to recognize smells is something we take for granted, until you can鈥檛.鈥
New data raises questions about the drinks people consume and the potential risks associated with them, according to researchers at Galway University in Ireland, in partnership with Hamilton鈥檚 McMaster University.
Scientists announced on Thursday a milestone in neurobiological research with the mapping of the entire brain of an adult fruit fly, a feat that may provide insight into brains across the animal kingdom, including people.
For humans, flashing a smile is an easy way to avoid misunderstanding. And, according to a new study, bottlenose dolphins may use a similar tactic while playing with each other.
Alphabet's Google is testing showing check marks next to certain companies on its search results, a company spokesperson said on Friday, in a move aimed at helping users identify verified sources and steer clear of fake websites.
But after fashion, death is the second through line in 'Heart on My Sleeve,' which tells the TV personality's life story as reflected by the items in her wardrobe.
Hollywood star Keanu Reeves made his professional auto racing debut on Saturday in an event in which 'The Matrix' star spun out at famed Indianapolis Motor Speedway.
You might be thinking, 'Shut up!' but it鈥檚 officially true: the 'Princess Diaries' franchise is finally growing.
Financial strain can be an uncomfortable burden to bear, especially if you feel that you're doing as much as you can and are barely managing to stay afloat. Personal finance contributor Christopher Liew shares some tips for managing financial stress and digging your way out of debt.
Yugali Bharote starts her day in the kitchen, preparing lunch boxes for her sons bound for school 鈥 but she doesn鈥檛 stop there. She then prepares almost a dozen lunch boxes for customers who have subscribed to her homemade meals.
Dubai's Emirates airline has banned pagers and walkie-talkies from its planes, following last month's attacks on such devices carried by the Lebanese militant group Hezbollah.
Travelling on a budget can be stressful, but there are ways you can ensure you're getting the best deal on flights as the holiday season approaches.
A five-seat sushi counter located inside another restaurant is the latest Vancouver eatery to receive a Michelin star.
Toilet paper shortages in stores across America are giving folks nightmarish reminders of the pandemic era. But the lack of toilet paper isn鈥檛 a direct result of a major port strike Tuesday. It鈥檚 because of panic buying.
Vanderbilt takes down AP poll No. 1 Alabama 40-35 in historic college football victory.
Avry Wortman, 13, scored two touchdowns on Sunday during her team's win in the under 14 Greater Moncton Football Association.
Argentine star Lionel Messi was on the bench to start Inter Miami CF's game in Toronto on Saturday.
New data from the Insurance Bureau of Canada (IBC) shows that even though claims for auto theft dropped in the first half of 2024 compared to their 2023 peak, the rates of reported theft remain well above those of years prior.
Tesla is recalling more than 27,000 Cybertrucks because the rearview camera image may not activate immediately after shifting into reverse, the fifth recall for the vehicle since it went on sale late last year.
A Pickering, Ont., student going to college to be a mechanic is shocked the engine in his two-year-old car will not be repaired under warranty after the dealership claimed he had been 'over-revving' the engine.
Chantal Kreviazuk is set to return to Winnipeg to mark a major milestone in her illustrious musical career.
From the beaches of Cannes to the bustling streets of New York City, a new film by a trio of Manitoba directors has toured the international film festival circuit to much pomp and circumstance.
A husband and wife have been on the road trip of a lifetime and have decided to stop in Saskatchewan for the winter.
The grave of a previously unknown Canadian soldier has been identified as a man from Hayfield, Man. who fought in the First World War.
A group of classic car enthusiasts donated hundreds of blankets to nursing homes in Nova Scotia.
Moving into the second week of October, the eastern half of Canada can expect some brisker fall air to break down from the north
What does New Westminster's t蓹m蓹sew虛tx史 Aquatic and Community Centre have in common with a historic 68,000-seat stadium in Beijing, an NFL stadium and the aquatics venue for the Paris Olympics? They've all been named among the world's most beautiful sports venues for 2024.
The last living member of the legendary Vancouver Asahi baseball team, Kaye Kaminishi, died on Saturday, Sept. 28, surrounded by family. He was 102 years old.
New data from Greater Vancouver and the Fraser Valley shows a surge in supply and drop in demand in the region's historically hot real estate market.
One person is reportedly dead and two others are injured after a pickup truck hit a bench, striking people who were waiting for the bus in Surrey Saturday afternoon.
A massive fire broke out in downtown Langley Saturday morning, destroying a restaurant and forcing several other businesses to close.
Police on Vancouver Island have made an arrest in the case of a 78-year-old woman found dead in her home almost two years ago.
The Ontario Science Centre is set to launch two temporary satellite locations in other parts of Toronto, which could let visitors access some of its interactive exhibits while a full interim location remains at least a year away, 麻豆影视 has learned.
Leo Campana's stoppage-time goal gave Inter Miami a 1-0 win and left Toronto FC's playoff hopes hanging by a thread Saturday.
According to a survey on recent alcohol consumption, younger Canadians are more likely to have not had a drink in the past week. For those interested in slowing or stopping their alcohol consumption, there's a phrase: 'sober curious.'
Emergency crews are on scene of a multi-vehicle collision along northbound Deerfoot Trail near 17 Avenue Southeast.
The first anniversary of the October Seventh Hamas attack on Israel is Monday and that prompted several hundred people to attend a pro-Palestinian rally Saturday afternoon at city hall.
The Saskatchewan Roughriders have clinched a playoff spot thanks to a win over the Edmonton Elks.
Demonstrators converged on downtown Ottawa Saturday afternoon as part of a global day of action to protest Israel's military actions in the Middle East.
Three people were taken to hospital after a crash between a pickup truck and a car in a rural part of Ottawa's south end on Saturday afternoon.
Environment Canada has issued a frost advisory as temperatures across Ottawa and eastern Ontario are expected to dip near the freezing mark this evening.
Police released the identities of the mother and daughter who were killed after a fire tore through a 160-year-old building in Old Montreal on Friday.
Montreal police are investigating another arson attack on a local business after a restaurant was targeted overnight.
The Quebec satirical news show 'Infoman' is still going strong as it marks its 25th season.
The Saskatchewan Roughriders have clinched a playoff spot thanks to a win over the Edmonton Elks.
Highway 39 near Warburg was closed Saturday after a serious crash involving a motorcycle and a van.
An estimated four billion birds will navigate man-made environments as they travel south from North America during fall migration. Tens of million of them will die en route due to human-created hazards.
The eight sons of Richard and Sarah Harvie from Gormanville, N.S., are believed to be the most siblings from one family, from either North America or the British Commonwealth, to serve in World War II.
Lenore Zann鈥檚 memoir, A Rogue鈥檚 Tale, focuses on her early acting career and overcoming struggles.
According to the Canadian Women & Sport鈥檚 2022 Rally Report, signing girls up to participate in sports is not enough; coaches and decisionmakers 鈥減lay a critical role in enabling girls鈥 full participation in sport.鈥
It鈥檚 1998. Google was just born, and dial-up was the primary way to connect to the Internet. New sites were being developed daily on any number of topics, from recipes to shopping. David Yanciw, however, was thinking big - big things, that is.
Communities outside of the perimeter aren鈥檛 immune to the housing and affordability struggles seen in Winnipeg.
As many as 25,000 employees could hit the picket lines as early as Tuesday morning, making it the second-largest strike in Manitoba鈥檚 history.
The Saskatchewan Roughriders have clinched a playoff spot thanks to a win over the Edmonton Elks.
Saskatchewan's two major political parties made campaign stops in Moose Jaw Saturday with both promising to invest into the city if elected on Oct. 28.
A wind warning was issued for parts of southern Saskatchewan, with gusts of up to 100 kilometres per hour (km/h) possible in some areas on Saturday, Environment and Climate Change Canada says.
The Huron Ontario Provincial Police said they responded to a 鈥渄owned airplane鈥 just after 11 a.m. Saturday.
Police say they were called to the area of Simcoe Street and Market Street around 1:30 a.m. Saturday for a report of an assault.
The Oktoberfest Parade is fast approaching and organizers are urgently seeking volunteers to fill the role of sign carriers.
The Saskatchewan Roughriders have clinched a playoff spot thanks to a win over the Edmonton Elks.
The Saskatchewan Teachers' Federation hosted a virtual election forum on education Thursday evening, giving candidates in the provincial election a chance to share their thoughts and answer questions on issues teachers find most important.
A permanent memorial at the site of the 2018 Humboldt Broncos bus crash is about to be a step closer.
A Liberal MP and a Conservative MP will be part of a team delivering speeches at an event in Ottawa commemorating the one year anniversary of the attacks on Oct. 7.
According to a survey on recent alcohol consumption, younger Canadians are more likely to have not had a drink in the past week. For those interested in slowing or stopping their alcohol consumption, there's a phrase: 'sober curious.'
Fire crews in Greater Sudbury battled a large garage fire on Friday.
Presently, the city is developing a waste master plan, which hopes to reduce the amount of trash going to landfills, and the introduction of green bins and organics collection.
If you鈥檙e keen to catch some of the brightest colours that mother nature has to offer this fall, you鈥檙e going to be waiting a bit longer.
CTV London's Bright Side team asked you to nominate local coaches to be appreciated, and you did not disappoint.
OPP are seeking assistance in their search for a 30-year-old man last seen in Orillia.
Provincial police are investigating a collision along Highway 400 in Tay Township Friday afternoon.
More than a thousand residents attended the Town of Innisfil's inaugural 'InnisFALL' festival on Saturday, which celebrated the spirit of fall with live music and entertainment at Innisfil Town Square.
Currently, County Road 18 is closed between Briton Road, and Rizzo Nicola Drive while police investigate.
If you鈥檙e keen to catch some of the brightest colours that mother nature has to offer this fall, you鈥檙e going to be waiting a bit longer.
The new last mile delivery station in will be open by the end of October 鈥 last mile facilities sort scan and prepare customer packages before they are loaded onto delivery vehicles.
Police on Vancouver Island have made an arrest in the case of a 78-year-old woman found dead in her home almost two years ago.
NDP Leader David Eby is promising to offer a $75-million loan forgiveness program to entice doctors, nurses and heath professionals to expand health-care services in rural British Columbia.
Ever since Taylor Swift made thousands, if not millions, of loyal fans鈥 wildest dreams come true by announcing a three-show run in Vancouver this December, scammers have attempted, and sometimes succeeded, to take advantage of the scramble for tickets.
Nearly two years after a man was stabbed to death in downtown Kelowna, RCMP have made an arrest in the case.
NDP Leader David Eby is promising to offer a $75-million loan forgiveness program to entice doctors, nurses and heath professionals to expand health-care services in rural British Columbia.
Three young suspects have been arrested in connection with a swarming attack on a teenager in B.C.'s Okanagan last week 鈥 and authorities have asked the public to stop circulating disturbing videos of the incident.
While the summer may be over, construction season in Lethbridge is not.
Lethbridge police executed dozens of warrants and laid numerous charges in another targeted enforcement project in the downtown area.
A person was airlifted to hospital following a serious crash in Taber, Alta., on Friday morning. Taber RCMP responded to the scene on Highway 864 around 10:30 a.m., for a crash involving an SUV and a semi-truck.
The Ontario College of Family Physicians has presented awards to 750 doctors based on comments from patients, including eight physicians who are part of the Group Health Centre in Sault Ste. Marie.
Two teens, ages 14 and 19, have been charged with arson in connection with a July 14 fire in Cat Lake First Nation that destroyed $500,000 in construction materials.
A northeastern Ontario jury has started deliberating in Canadian musician Jacob Hoggard's sexual assault trial, we can now tell you what they weren't allowed to hear.
He may not have logged the fastest time or even gone the full distance, but residents of a Newfoundland town agree the goat who unexpectedly joined the local weekend half marathon was the event's undisputed champion.
A mother in a community where the cost of living is one of the highest in the country says grocery prices are 'inhumane' and retailers are putting profits ahead of people鈥檚 basic human right to food.
A soccer game in England on Tuesday night drove a spike in online traffic across the Atlantic to a website launched by the Newfoundland and Labrador government.
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