Christopher Labos Canada pandemic infection epidemiologist Christopher Labos Canada

N.B. docs encouraged to wear goggles, but not enough evidence for public to follow: experts

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COVID-19. Canada’s efforts to buy pandemic PPE to be assessed by auditor general Dr. Christopher Labos, a Montreal-based cardiologist and epidemiologist, supports wearing goggles or face shields in higher-risk settings such as hospitals, but says “it’s not that easy to establish how infection happens because once you get sick, there’s no way to really tell where the virus got in from.”While surface transmission is possible, it’s not as likely, he says.

The primary source of infection comes from person-to-person interaction, by way of air.But in response to a question regarding spread, Labos says “I’m certainly not aware of much research on it.”“I think what’s happening is, throughout the pandemic, it’s becoming increasingly clear that respiratory transmission is the primary route and we’re seeing more and more evidence that it’s not just large droplets as we were saying at the beginning,” he says. “But even small aerosols that can linger in the air for long periods of time, what we often talk about in terms of airborne transmission.”Susanne Gulliver, an epidemiologist in St.

John’s, concurs that there’s not enough evidence yet, but we can still stick to the basics.“There’s no great data, but I would remind people to not touch their eyes, to do what we were always doing: wash your hands,” she says.“We’re watching science happen in real time which a lot of the general public don’t get to see; us hypothesis testing and learning as we go and as we’re communicating with the public.” B.C.

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