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Researchers race to study probiotic before white nose syndrome spreads to B.C. bats – CBC.ca

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Researchers say a deadly fungus that has nearly wiped out a North American bat species hasn’t yet spread to British Columbia, giving them valuable time to study whether probiotics prevent the disease.

B.C. scientists have been researching the bacteria-laden powder’s effect on white-nose syndrome for the last three years.

The condition kills the bats by forcing them to wake from hibernating and use their energy to groom the fungus off their bodies.

Little brown myotis bats were once considered the most populous species of bats in North America. The disease has decimated them, and the species was declared endangered by the federal government in 2012, just six years after the first case of white-nose syndrome was documented on the continent.

The first bat in Washington state with the syndrome was discovered in 2016.

‘Get out in front’

Cori Lausen, a biologist with the Wildlife Conservation Society Canada, said experts have been expecting the disease to spread quickly across the west as it did further east, but that hasn’t happened.

“As far as we know, it is contained to Washington and that is good news for our bats, and for our program, because we’re trying to get out in front of the disease and use a preventive or prophylaxis approach, and that is where the probiotic comes in.”

B.C. bats often raise their young in maternity roosts in the summer and that’s where researchers have been administering the probiotic since 2019.

Lausen said her team will be out spraying the probiotic at three Vancouver-based research sites this spring.

‘Similar to people taking probiotic pills’

She said scientists spray a tiny amount of water into a bat box followed by a powdered clay that contains probiotic cells. Once bats enter the box, a layer of the dust is transferred onto their bodies and wings.

“The microbes just start to grow on the wings alongside all of their natural bacteria. This is similar to people taking probiotic pills, except that the microbiomes we are trying to enhance are the ones on the wings because that’s where the fungus that causes white-nose syndrome grows,” she said.

The probiotic is a combination of four bacterial strains, and other studies have shown that it’s effective in slowing the growth of the fungus on the bat.

The province is home to 14 confirmed hibernating bat species, but big brown, Yuma myotis, and little brown myotis species are being targeted for the Wildlife Conservation Society program because they are most affected by the syndrome, Lausen said.

Smaller hibernation colonies

She said bat hibernation sites are mostly unknown on the west coast, which limits research opportunities.

There have been no confirmed cases of white-nose syndrome in Alberta either, and one potential reason Lausen suggested is hibernation settings. She said bats in the west likely don’t hibernate in large colonies like they do in the east, making them less likely to spread the fungus as rapidly.

She described the probiotic as a “made-in-the-west solution” because most eastern-based scientists have focused on finding cures for already infected animals.

White nose syndrome is caused by a deadly fungus that often spreads from bat to bat during hibernation. (Jordi Segers)

Scientists in Wisconsin, Ill., are working to develop a vaccine, and Lausen said the teams are considering mixing the probiotic and a vaccine in the future.

“They’d actually work really well together because the vaccine requires the bats eat it and, with the application of the probiotic, they often ended up consuming some of it so, we’re actually looking at the potential of a dual purpose by combining them,” she said. “That way, they might get a little bit of protection from the vaccine and a little bit of protection from the probiotic.”

Lausen said the eventual plan is to send B.C. residents kits to spray the probiotic into bat boxes on their properties, though this likely won’t be possible for at least two years.

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Canada to donate up to 200,000 vaccine doses to combat mpox outbreaks in Africa

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The Canadian government says it will donate up to 200,000 vaccine doses to fight the mpox outbreak in Congo and other African countries.

It says the donated doses of Imvamune will come from Canada’s existing supply and will not affect the country’s preparedness for mpox cases in this country.

Minister of Health Mark Holland says the donation “will help to protect those in the most affected regions of Africa and will help prevent further spread of the virus.”

Dr. Madhukar Pai, Canada research chair in epidemiology and global health, says although the donation is welcome, it is a very small portion of the estimated 10 million vaccine doses needed to control the outbreak.

Vaccine donations from wealthier countries have only recently started arriving in Africa, almost a month after the World Health Organization declared the mpox outbreak a public health emergency of international concern.

A few days after the declaration in August, Global Affairs Canada announced a contribution of $1 million for mpox surveillance, diagnostic tools, research and community awareness in Africa.

On Thursday, the Africa Centres for Disease Control and Prevention said mpox is still on the rise and that testing rates are “insufficient” across the continent.

Jason Kindrachuk, Canada research chair in emerging viruses at the University of Manitoba, said donating vaccines, in addition to supporting surveillance and diagnostic tests, is “massively important.”

But Kindrachuk, who has worked on the ground in Congo during the epidemic, also said that the international response to the mpox outbreak is “better late than never (but) better never late.”

“It would have been fantastic for us globally to not be in this position by having provided doses a much, much longer time prior than when we are,” he said, noting that the outbreak of clade I mpox in Congo started in early 2023.

Clade II mpox, endemic in regions of West Africa, came to the world’s attention even earlier — in 2022 — as that strain of virus spread to other countries, including Canada.

Two doses are recommended for mpox vaccination, so the donation may only benefit 100,000 people, Pai said.

Pai questioned whether Canada is contributing enough, as the federal government hasn’t said what percentage of its mpox vaccine stockpile it is donating.

“Small donations are simply not going to help end this crisis. We need to show greater solidarity and support,” he said in an email.

“That is the biggest lesson from the COVID-19 pandemic — our collective safety is tied with that of other nations.”

This report by The Canadian Press was first published Sept. 13, 2024.

Canadian Press health coverage receives support through a partnership with the Canadian Medical Association. CP is solely responsible for this content.

The Canadian Press. All rights reserved.

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How many Nova Scotians are on the doctor wait-list? Number hit 160,000 in June

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HALIFAX – The Nova Scotia government says it could be months before it reveals how many people are on the wait-list for a family doctor.

The head of the province’s health authority told reporters Wednesday that the government won’t release updated data until the 160,000 people who were on the wait-list in June are contacted to verify whether they still need primary care.

Karen Oldfield said Nova Scotia Health is working on validating the primary care wait-list data before posting new numbers, and that work may take a matter of months. The most recent public wait-list figures are from June 1, when 160,234 people, or about 16 per cent of the population, were on it.

“It’s going to take time to make 160,000 calls,” Oldfield said. “We are not talking weeks, we are talking months.”

The interim CEO and president of Nova Scotia Health said people on the list are being asked where they live, whether they still need a family doctor, and to give an update on their health.

A spokesperson with the province’s Health Department says the government and its health authority are “working hard” to turn the wait-list registry into a useful tool, adding that the data will be shared once it is validated.

Nova Scotia’s NDP are calling on Premier Tim Houston to immediately release statistics on how many people are looking for a family doctor. On Tuesday, the NDP introduced a bill that would require the health minister to make the number public every month.

“It is unacceptable for the list to be more than three months out of date,” NDP Leader Claudia Chender said Tuesday.

Chender said releasing this data regularly is vital so Nova Scotians can track the government’s progress on its main 2021 campaign promise: fixing health care.

The number of people in need of a family doctor has more than doubled between the 2021 summer election campaign and June 2024. Since September 2021 about 300 doctors have been added to the provincial health system, the Health Department said.

“We’ll know if Tim Houston is keeping his 2021 election promise to fix health care when Nova Scotians are attached to primary care,” Chender said.

This report by The Canadian Press was first published Sept. 11, 2024.

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Newfoundland and Labrador monitoring rise in whooping cough cases: medical officer

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ST. JOHN’S, N.L. – Newfoundland and Labrador‘s chief medical officer is monitoring the rise of whooping cough infections across the province as cases of the highly contagious disease continue to grow across Canada.

Dr. Janice Fitzgerald says that so far this year, the province has recorded 230 confirmed cases of the vaccine-preventable respiratory tract infection, also known as pertussis.

Late last month, Quebec reported more than 11,000 cases during the same time period, while Ontario counted 470 cases, well above the five-year average of 98. In Quebec, the majority of patients are between the ages of 10 and 14.

Meanwhile, New Brunswick has declared a whooping cough outbreak across the province. A total of 141 cases were reported by last month, exceeding the five-year average of 34.

The disease can lead to severe complications among vulnerable populations including infants, who are at the highest risk of suffering from complications like pneumonia and seizures. Symptoms may start with a runny nose, mild fever and cough, then progress to severe coughing accompanied by a distinctive “whooping” sound during inhalation.

“The public, especially pregnant people and those in close contact with infants, are encouraged to be aware of symptoms related to pertussis and to ensure vaccinations are up to date,” Newfoundland and Labrador’s Health Department said in a statement.

Whooping cough can be treated with antibiotics, but vaccination is the most effective way to control the spread of the disease. As a result, the province has expanded immunization efforts this school year. While booster doses are already offered in Grade 9, the vaccine is now being offered to Grade 8 students as well.

Public health officials say whooping cough is a cyclical disease that increases every two to five or six years.

Meanwhile, New Brunswick’s acting chief medical officer of health expects the current case count to get worse before tapering off.

A rise in whooping cough cases has also been reported in the United States and elsewhere. The Pan American Health Organization issued an alert in July encouraging countries to ramp up their surveillance and vaccination coverage.

This report by The Canadian Press was first published Sept. 10, 2024.

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