TORONTO — The number of Canadian adults infected with COVID-19 tripled during the fifth wave of the pandemic compared with the total number of adults infected in the previous four waves, according to a new study led by Toronto researchers.
More than 5,000 Canadian adults — members of the Angus Reid Forum, a public polling cohort — participated in the fourth phase of the Action to Beat Coronavirus (Ab-C) study. The findings of the study were published as a letter to the editor in The New England Journal of Medicine Wednesday.
The adult participants took a self-administered dried blood spot test between Jan. 15 and March 15, 2022 and sent the blood samples back to the researchers for analysis. The research team then tested the samples for antibodies related to COVID-19.
From those results, the researchers found nearly 30 per cent of Canadian adults were infected during the first Omicron wave of infections compared with roughly 10 per cent who had been infected in the previous four waves.
Of those fifth waveinfections, one million were among the country’s 2.3 million unvaccinated adult population — representing 40 per cent of all unvaccinated adults, the study notes.
Patrick Brown, a lead author of the Ab-C study and biostatistician at the Centre for Global Health Research at St. Michael’s Hospital, said the study is meant to portray a “complete and representative picture” of COVID-19 in the country in the absence of widespread PCR testing and COVID-19 data tracking.
“This is quite important for us to be able to understand COVID in the population,” he said in a phone interview Wednesday.
“The testing data is incomplete and we’ve essentially stopped PCR testing for the most part in Canada, or in Ontario, at least, so having a representative sample of people who receive these test kits is very important to figure out how much COVID there has been and how much immunity we have in the population.”
The study also found that antibody levels were much lower amongst adults with only two doses of a COVID-19 vaccine compared to those with three doses, meaning those with three doses had stronger immunity in the face of the virus.
And amongst the unvaccinated population — including those who had a COVID-19 infection — their antibody levels were “quite” lower than people with three doses of the vaccine, Brown noted.
“(In) Canada, we had quite a bit less COVID-19 than some other countries, especially the U.S. We have less natural protection and we’re really relying on vaccines in Canada to build up immunity in our population,” he said.
“Certainly three doses plus an infection was the maximum protection, but three doses of vaccine certainly gave a very good amount of protection — a big improvement over two doses alone.”
The Ab-C study is a collaboration between Unity Health Toronto, the University of Toronto’s Dalla Lana School of Public Health, the Angus Reid Institute and the Lunenfeld-Tanenbaum Research Institute at Sinai Health. It’s funded by the federal government through its COVID-19 Immunity Task Force.
The team of researchers has been tracking the pandemic in Canada with periodic polling about lived experience and blood sample collection since May 2020.
Brown said the next phase of the study is already being conducted. The team has started surveying roughly 1,300 Canadian adults who were not infected by the initial Omicron variant known as BA.1 to determine whether they were infected by the Omicron subvariant called BA.2 from March to June 2022.
“We are preparing test kits now to send out our panel of people we’ve come back to several times, and this will be the fifth round of tests we’re sending them to better understand the second wave of Omicron,” he said.
“We found that the number of cases reported by public health isn’t as high as the previous wave, the number of hospitalizations hasn’t risen very much, but there has been a lot of infection … so we’re expecting to see that there’s been quite a lot of COVID throughout the population.”
This report by The Canadian Press was first published May 18, 2022.
This story was produced with the financial assistance of the Meta and Canadian Press News Fellowship.
Noushin Ziafati, The Canadian Press
Toronto Public Health hosting pop-up COVID-19 vaccination clinics throughout Canada Day weekend – Toronto.com
Toronto Public Health continues to host summer pop-up vaccination clinics across the city in partnership with Toronto’s Canada Day festivals and special events. This is part of Team Toronto’s continued efforts to bring COVID-19 vaccination opportunities to places residents live, work and play.
“As people gather to celebrate Canada Day across the city, Team Toronto will be out helping residents get vaccinated against COVID-19 and keep their vaccinations up to date,” said Mayor John Tory. “We have made such progress thanks to our world-leading vaccination efforts, and that’s why we’re continuing to work throughout this holiday and into the summer to help deliver vaccine doses.”
TPH will host the following vaccination clinics in early July:
• High Park Canada Day Festival at High Park, 1873 Bloor St. W., Friday, July 1, 10 a.m. to 2 p.m.
• East York Canada Day Festival at Stan Wadlow Park. 373 Cedarvale Ave., Friday, July 1, 11 a.m. to 5 p.m.
• Canada Day event at Mel Lastman Square, 5100 Yonge St. Friday, July 1, 2 to 7 p.m.
• CIMA Mayor’s Cricket Trophy event at Sunnybrook Park, 1132 Leslie St. Saturday, July 2, 9 a.m. to 4 p.m.
• Lakeshore Ribfest at 1 Colonel Samuel Smith Park Dr. Saturday July 2 and Sunday, July 3, 11 a.m. to 6 p.m.
• Afrofest at Woodbine Park, 1695 Queen St. E. Saturday, July 9 and Sunday, July 10, 1 to 7:30 p.m.
• Dragon Boat Challenge (GWN Sport Regatta) at Marilyn Bell Park, 1095 Lakeshore Blvd. W. Saturday July 9, 8:30 a.m. to 3:30 p.m.
These family-friendly and youth-friendly clinics will provide first, second, third, fourth and children’s COVID-19 doses to eligible residents age five and up on a walk-in basis, with no appointment or health card required. Pfizer and Moderna vaccines will be offered by TPH nurses, who will also answer COVID-19 and vaccine-related questions.
Residents can continue to get vaccinated at city-run immunization clinics, primary care offices and more than 525 pharmacies. A full list of clinic locations and hours is available on the City’s COVID-19: Where to Get Vaccinated webpage.
As of Monday, July 4, the city-run immunization clinic at Metro Hall will operate Monday to Friday noon to 6 p.m. and Saturday and Sunday 10 a.m. to 4 p.m. Residents can find a pharmacy offering COVID-19 vaccination by using the Government of Ontario’s COVID-19 pharmacy vaccine locations webpage.
All eligible residents are encouraged to get their third and fourth dose as soon as possible. As with vaccines for other diseases, people are protected best when they stay up to date. COVID-19 vaccines have been scientifically proven to lower the risk of illness, hospitalization and death while protecting oneself, loved ones and the community, and residents with three doses had the lowest rates of hospitalization, ICU and death over any other level of vaccination.
Style File: Smart sunscreens – Montreal Gazette
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Sunscreen is always a good idea.
Skin cancers are the most common forms of cancer in Canada, according to Statistics Canada. And severe sunburns are noted as “an important risk factor for melanoma and non-melanoma skin cancers,” according to the agency.
With this in mind, it’s important to slather, smooth, spray — or whatever your chosen format of sun protection may be — this summer.
Here are four smart sunscreen options to consider adding to your daily sun-protection plan:
From the French brand La Roche-Posay, this “ultralight” sunscreen formula features a universal tint to match most skin tones. See you later, face makeup. The Anthelios Mineral Tinted Ultra Fluid boasts a sun protection factor (that’s the SPF) of 50, thanks to 100 per cent mineral filters. Suitable for sensitive skin, the broad-spectrum sunscreen — it blocks both UVA and UVB rays, is sweat resistant and water resistant for up to 40 minutes.
$35.95 | Shoppers Drug Mart, Laroche-posay.ca
This advanced sunscreen formula from Shiseido acts as a moisturizer, sunscreen and face primer all-in-one formula. The Urban Environment Oil-Free Sunscreen has an SPF of 42 and features skin-loving ingredients such as spirulina and hyaluronic acid to hydrate and smooth skin while broad-spectrum UV filters protect against ultraviolet rays.
$45 | Sephora, Shiseido.com
Perfect for those who struggle with acne, this Clear as Day SPF 46 from the brand Starface is vegan and cruelty-free, while also being oil-free and non-comedogenic. The fragrance-free formula features a unique gel texture and is completely clear so there’s no fear of a white cast on skin. Water resistant for up to 80 minutes, so you can spend a little extra time splish-splashing about.
$32 | Starfaceworld.ca
Sun protection doesn’t stop at the face, neck and décolletage. Introduce head-to-toe coverage to your summer routine with the Garnier Ombrelle Sensitive Expert Body Lotion SPF 60. The hypoallergenic sunscreen formula features broad-spectrum coverage, is fragrance-free, dermatologist-tested, non-comedogenic and water resistant for up to 80 minutes. Plus, the lotion formula is easy to apply, and absorbs quickly.
$24.99 | London Drugs, Londondrugs.com
Mysterious staggering disease in cats down to previously unknown virus – New Scientist
A previously unknown rustrela virus might be the cause of a staggering disease that affects cats in some parts of Europe
1 July 2022
The cause of a brain disease in cats that makes them develop symptoms such as staggering is a previously unknown virus, a study suggests. The pathogen is a rustrela virus and is probably carried by wood mice.
The findings show that rustrela viruses are more diverse and widespread than previously thought, according to Kaspar Matiasek at the Ludwig Maximilian University of Munich and his colleagues. They write that the viruses might cause neurological diseases in other mammals …
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