British Columbia is extending the interval between the two doses of the Pfizer-BioNTech COVID-19 vaccine, the province’s top doctor said Monday.
Dr. Bonnie Henry told a news briefing that further delays in the production and delivery of the vaccine over the next two weeks prompted health officials to extend the time period between the shots from 35 to 42 days.
“It’s about choosing in the short term to give more people protection from dose one instead of giving some people full protection and leaving others with none,” she said. “We will make up these doses and we will be providing the second dose of vaccine to everybody as soon as we possibly can.”
The province had assured residents last week that it remained committed to administering second doses on Day 35 and Henry said officials learned over the weekend B.C. would receive even fewer doses than expected.
“The amounts that we were expecting to receive in the first week of February have been dramatically reduced,” she said, adding B.C. officials do not yet know how many doses are set to arrive later next month.
The federal government is doing everything in its power to make sure vaccine supply gets back on track, Henry added.
Canada’s National Advisory Committee on Immunization has said prolonging the wait to 42 days is acceptable in places where vaccine supply is limited and where transmission of the illness is high and health-care resources are strained. The World Health Organization has also suggested that waiting up to six weeks after the first dose is acceptable.
About 60 per cent of the more than 119,000 doses of COVID-19 vaccine administered in B.C. so far have been used to protect residents of assisted living and long-term care facilities, said Henry.
That total includes all of the facilities in the Island, Vancouver Coastal and Fraser health regions, she said, while vaccinations in long-term care in the Interior and Northern health authorities are set to wrap up this week.
B.C. recorded 26 more deaths linked to COVID-19 on Monday and 1,344 new cases diagnosed over the last three days.
What's behind the rise in monkeypox cases? Here is what scientists know so far – The Globe and Mail
A handful of cases of monkeypox have now been reported or are suspected in Britain, Portugal, Spain and the United States.
The outbreaks are raising alarm because the viral disease, which spreads through close contact and was first found in monkeys, mostly occurs in west and central Africa, and only very occasionally spreads elsewhere.
Here is what scientists know so far.
Monkeypox is a virus that causes fever symptoms as well as a distinctive bumpy rash. It is usually mild, although there are two main strains: the Congo strain, which is more severe – with up to 10 per cent mortality – and the West African strain, which has a fatality rate in about 1 per cent of cases. The UK cases have been reported as the West African strain.
“Historically, there have been very few cases exported. It has only happened eight times in the past before this year,” said Jimmy Whitworth, a professor of international public health at the London School of Hygiene and Tropical Medicine, who said it was “highly unusual”.
Portugal has logged five confirmed cases, and Spain is testing 23 potential cases. Neither country has reported cases before.
The United States has also reported one case.
The virus spreads through close contact, both in spillovers from animals and, less commonly, between humans. It was first found in monkeys in 1958, hence the name, although rodents are now seen as the probable main animal host.
Transmission this time is puzzling experts, because a number of the cases in the United Kingdom – nine as of May 18 – have no known connection with each other. Only the first case reported on May 6 had recently traveled to Nigeria.
As such, experts have warned of wider transmission if cases have gone unreported.
The UK Health Security Agency’s alert also highlighted that the recent cases were predominantly among men who self-identified as gay, bisexual or men who have sex with men, and advised those groups to be aware.
Scientists are now carrying out genomic sequencing to see if the viruses are linked, the World Health Organization (WHO) said this week.
One possible scenario behind the rise in cases is increased travel as COVID-19 restrictions are lifted.
“My working theory would be that there’s a lot of it about in west and central Africa, travel has resumed, and that’s why we are seeing more cases,” said Whitworth.
Monkeypox puts virologists on the alert because it is in the smallpox family, although it causes less serious illness.
Smallpox was eradicated by vaccination in 1980, and the shot has since been phased out. But it also protects against monkeypox, and so the winding down of vaccination campaigns has led to a jump in monkeypox cases in areas where the disease is endemic, according to Anne Rimoin, an epidemiology professor at UCLA in California.
She said urgent investigation of the new cases was important as “they could suggest a novel means of spread or a change in the virus, but this is all to be determined”.
Experts urged people not to panic.
“This isn’t going to cause a nationwide epidemic like COVID did, but it’s a serious outbreak of a serious disease – and we should take it seriously,” said Whitworth.
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Montrealers 'do not have to panic' about monkeypox, Drouin says – Montreal Gazette
Public health authorities are investigating 17 suspected cases of monkeypox in the Montreal area. It is the only known outbreak in Canada of the rare disease, which can cause painful pustules and scabs to break out. Recent outbreaks have been reported in Europe and the United States.
Montreal public health director Dr. Mylène Drouin said authorities will put protective measures in place, but stressed that all cases so far have been minor and there is no cause for alarm.
“We do not have to panic at this time. It’s not something that is going to go to sustained community transmission,” she said at a hastily organized news conference Thursday, the day after Radio-Canada reported there were several suspected cases in the city.
“It’s not something you can acquire if you go to the grocery store or go on public transportation.”
The disease is spread primarily through close, sustained contact, which includes but is not limited to sexual contact, Drouin said. Contacts considered at risk are those who live in the same household with an infected person, or who have had sexual relations with someone who has had the disease.
To date, 15 suspected cases have been identified in Montreal, as well as one on the South Shore and one on the North Shore. The infected are mainly men who had sexual relations with other men, between the ages of 30 and 55.
Drouin stressed that monkeypox is not a sexually transmitted disease and warned against stigmatizing a particular segment of the community, as anyone can catch the virus.
The first cases were declared on May 12 from clinics specializing in sexually transmitted diseases. The cases were initially thought to be chancroid, a rare sexually transmitted disease that causes painful genital ulcers.
It wasn’t until Tuesday, when authorities learned of a suspected case from the United States who had travelled to Montreal, that monkeypox was suspected. Several of the cases in Montreal have been linked to a traveller who came from Boston.
Montreal’s cases have not yet been confirmed by a laboratory, but Drouin said recent outbreaks in Europe and a case reported in the United States suggest they are likely cases of the virus.
Monkeypox is typically limited to Africa, and rare cases in the United States and elsewhere are usually linked to travel there. A small number of confirmed or suspected cases have been reported this month in the United Kingdom, Portugal and Spain.
Drouin said the disease is transmitted by close contact and droplets.
Monkeypox typically begins with such symptoms as fever, headache, backache and fatigue, then progresses to a rash on the face and body. The Public Health Agency of Canada says the swelling or enlargement of lymph nodes that accompanies monkeypox distinguishes it from smallpox.
The incubation period is seven to 17 days and most infections of monkeypox last two to four weeks, the agency says. Montreal officials said there is no treatment at this time.
The first symptoms of the disease that were identified in Montreal have been traced back to April 29. People who have been in contact with a suspected case will not have to isolate, but they are asked to monitor for symptoms and go to a doctor if they suspect they have contracted the disease. Health workers in contact with possible cases are advised to wear full protective gear, including a gown, N95 mask and gloves.
The Public Health Agency of Canada notes that the smallpox vaccine, which was routinely administered to Canadians born before 1972, protects against monkeypox. Smallpox was eradicated in 1977.
Some people who have been in contact with cases in the U.K. have received a smallpox vaccine as protection. Drouin said the decision on whether similar actions will be taken here depend on availability of the vaccine, and will be decided on a provincial and federal level.
The Massachusetts Department of Public Health reported Wednesday that it had confirmed the first U.S. case of monkeypox virus infection of 2022. The individual is an adult male who recently travelled to Canada. The agency didn’t indicate what province or provinces he visited and did not respond to questions.
This story will be updated.
Canada’s COVID-19 infections among adults tripled in early 2022 due to Omicron: study
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
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