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Ontario investigating 29 people for possible coronavirus infection




Provincial health officials are monitoring 29 people with signs of possible coronavirus infection, up from 17 on Friday, as all three confirmed patients in Ontario are recovering.

A female Western University student in her 20s was diagnosed with the virus on Friday, on a second attempt after her first test came back negative.

The federal microbiology lab in Winnipeg confirmed her case over the weekend.

Ontario’s Associate Medical Officer of Health Barbara Yaffe said that since the start of the outbreak in China, 76 people in Ontario have tested negative for the virus, three people are “presumptive negatives” where an Ontario lab has ruled them negative but the federal lab results have yet to come back, and test results for 26 others are still pending.

The province’s first two cases, a couple in their 50s, are recovering at home.

“Right now all three cases are at home and doing well,” Ontario Medical Officer of Health Dr. David Williams said Monday. “That’s good news.”

A fourth patient, a man in British Columbia, remains in stable condition.

The three patients recovering at home will stay in isolation at home until local public health officials are confident they no longer carry the virus.

“They’re being monitored by local health and will be released from isolation after we get two negative specimens 24 hours apart, which I don’t believe has happened,” Yaffe said.

Williams said that it is his expectation that the number of people who will come forward for testing in Ontario in the coming days will start to wane, as more days pass from the night of Jan. 23, when Chinese officials cut all road, air and rail links out of Wuhan and the surrounding province in response to the outbreak.

“Our assumption is that even people who got out earlier had not been in Hubei since the 23rd or 24th ,” Williams said.

Doctors fighting the virus are working on the World Health Organization assessment that the virus cannot incubate inside a patient without showing symptoms for more than 14 days, which would mean the window for patients from the most heavily-impacted area to present themselves is closing.

Province prepares to host Canadians returning from Wuhan

As the federal government said Sunday it has prepared a plane to take Canadians out of Wuhan and back to CFB Trenton, Williams said they are still in discussions about what the reception process on the base will look like.

“We’re trying to set up a process that if they’re going to come, they may need comprehensive care,” he said, adding that the province’s mobile health response unit is at the ready to set up at the base.

What he knew for sure was that passengers arriving at the Wuhan airport would be screened for symptoms upon entry and barred if they show any.

“You have to be asymptomatic to get on that plane,” he said.

They would again be screened for symptoms before boarding the plane, and then periodically monitored while in flight.

Williams said it was his understanding that anyone who showed symptoms on the plane would be taken off upon arrival and held apart from the rest of the passengers, who will be required to stay at the base for 14 days.

The federal government has not yet said when the flight would depart for China but are expected to speak about the process later on Monday.

Meanwhile in China, the spread of the virus has not showed signs of slowing.

The virus has infected more than 17,000 people in China, resulting in 362 deaths as of Monday morning.

Even without further cases in Ontario or Canada, public health officials will be on alert.

“We’re at this for the next three to four months,” Williams said.

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Polio virus found in New York City wastewater, suggesting local transmission – CBC News



Health officials identified the virus that causes polio in New York City’s wastewater, suggesting local transmission of the virus, state authorities said on Friday, urging unvaccinated New Yorkers to get vaccinated.

“The NYC Heath Department and the New York State Department of Health have identified poliovirus in sewage in NYC, 
suggesting local transmission of the virus,” the city’s health department said in a statement on Friday.

“Polio can lead to paralysis and even death. We urge unvaccinated New Yorkers to get vaccinated now.”

The identification comes weeks after a case of polio in an adult was made public on July 21 in Rockland County, marking the nation’s first confirmed case in nearly 10 years.

Earlier this month, health officials said the virus was found in wastewater in the New York City suburb a month before health officials there announced the Rockland County case.

The U.S. Centers for Disease Control and Prevention (CDC) said at the time that it was not clear whether the virus was actively spreading in New York or elsewhere in the United States.

Evidence of virus in London

There is no cure for polio, which can cause irreversible paralysis in some cases, but it can be prevented by a vaccine made available in 1955.

New York officials have said they are opening vaccine clinics to help unvaccinated residents get their shots. 

Inactivated polio vaccine (IPV) is the only polio vaccine that has been given in the United States since 2000, according to the CDC. It is given by shot in the leg or arm, depending on the patient’s age.

On Wednesday, British health authorities announced they will offer a polio booster dose to children aged one to nine in London, after finding evidence the virus has been spreading in multiple regions of the capital. Britain’s Health Security Agency said polio virus samples were found in sewage water from eight boroughs of London, but there were no confirmed infections.

Polio is often asymptomatic and people can transmit the virus even when they do not appear sick. But it can produce 
mild, flu-like symptoms that can take as long as 30 days to appear, officials said.

It can strike at any age but the majority of those affected are children aged three and younger. 

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Monkeypox: gov’t has no plans to call public health emergency – CTV News




Canada’s chief public health officer Dr. Theresa Tam says there are no plans at the moment to declare monkeypox a public health emergency.

While the World Health Organization and the United States have both recently done so, Tam said there is little benefit to declaring a federal public health emergency in Canada, because of the structure of regional and provincial public health authorities.

She said a federal emergency declaration would involve the Emergencies Act — which hasn’t even been invoked to address the nearly two-and-a-half-year COVID-19 pandemic in Canada. Tam said thus far, Canada has already been able to mobilize vaccines, therapeutics, and funding to tackle monkeypox.

Tam also said local and provincial authorities have more flexibility, and have been able to respond to the rise in monkeypox cases. Local and provincial authorities could also decide to declare the virus a public health emergency at those levels, as many did with COVID-19.

“To date our discussions have focused on testing, working with community organizations to raise awareness on ways to limit spread the virus, and deployment of the Imvamune vaccine and therapeutics,” Tam said. “As the global monkeypox outbreak continues to be a serious concern, focusing efforts on the impacted communities in Canada and worldwide, including with vaccinations, we have an opportunity to contain the spread.”

To day, approximately 99,000 doses of Imvamune have been deployed to the provinces and territories, and more than 50,000 people have been vaccinated, Tam said.

Canada’s Deputy Chief Public Health Officer Dr. Howard Njoo said the approach continues to be vaccinating higher risk communities first, and there are currently enough doses to do so.

Tam says there have been approximately 31,000 cases of monkeypox reported globally, with 1,059 in Canada, mostly in Ontario.

While cases of the virus first started popping up in Quebec, Ontario has since surpassed it in its number of infections.

To date, there have been 28 hospitalizations — two in intensive care — from monkeypox in Canada, and no deaths. Tam said it’s too soon to tell whether the number of cases has plateaued in Canada.

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COVID-19 vaccine side-effects less likely in pregnant people, says study – CP24



Pregnant people experienced lower rates of side-effects from the COVID-19 vaccine than their counterparts who weren’t pregnant, a new Canadian study suggests.

The Canadian National Vaccine Safety Network collected data from 191,360 vaccinated women aged 15 to 49 between December 2020 and November 2021. The researchers asked participants to report “significant health events” that were serious enough to make them miss school or work, seek medical attention or disrupt their routines.

Of 5,597 pregnant participants, four per cent reported a significant health event within seven days of receiving their first dose of an mRNA vaccine, and 7.3 per cent of 3,108 pregnant respondents said they had side-effects from their second shots.

Among those who weren’t pregnant, 6.3 per cent of 174,765 respondents reported a significant health event after dose one, and 11.3 per cent of 10,254 participants said they felt sick after dose two.

“One of the things that was really striking was that the rates of these events happening in pregnant people was lower than the rates happening in non-pregnant people at the same age,” said Manish Sadarangani, lead author of the paper published in the Lancet Infectious Diseases journal on Thursday. “It’s very reassuring around the safety of COVID vaccines and pregnancy.”

Studies on other vaccines have found that pregnant people experience side-effects at roughly the same rate as those who aren’t pregnant or even slightly higher, said Sadarangani, an investigator at BC Children’s Hospital.

More research is needed to understand why this might not be the case for mRNA COVID-19 vaccines, Sadarangani said, but he suspects the physical transformation of pregnancy could be a factor.

“There’s a lot of hormonal and immunological and physiological changes happening during pregnancy, and some of them we understand, some of them we don’t,” he said. “I’m presuming that some of these changes are leading to these lower rates.”

Thursday’s study found that rates of serious health events after getting a COVID-19 vaccine, such as hospitalization, were similarly rare across all groups.

There was no significant difference in the rates of miscarriage or stillbirth among participants who were vaccinated and those who weren’t.

Researchers are conducting a followup survey to see if participants experienced any side-effects six months after their COVID-19 shots, Sadarangani said.

Pregnant people are at increased risk of COVID-19 complications, he said, so it’s all the more important that researchers continue to study how vaccination affects them and their babies.

“All of the data we have really highlight the safety of all of these vaccines in pregnancy,” said Sadarangani. “Ultimately, this is the best way to protect this group of people in our population.”

This report by The Canadian Press was first published Aug. 12, 2022.

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