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eIn fact, it is much less than that: “overall, less than 1 in 10,000,” refers to the CDC at Updated yesterday On its website. Studies on this topic aren’t as numerous, as the CDC found, because it’s not really easy to study – it’s particularly difficult to separate infections that originate through the air from those obtained through surfaces. But work that somehow succeeds in doing so indicates that “every contact with a contaminated surface has a less than 1 in 10,000 chance of causing infection,” reads the CDC website.

Sure, some studies (which caused a stir in the spring of 2020) found that SARS-CoV-2 can survive for a few days on certain surfaces, especially plastic and cardboard. So the risk is not zero, everyone agrees on that. But in the laboratory, scientists conducted these tests with large quantities of the virus and made sure to “harvest” as much as possible by rubbing the surfaces well with cotton swabs. In practice, the chances of spreading a number of viruses large enough to cause disease, from surface to fingers, then fingers to mouth or nose, and eventually to the respiratory system, are very slim.

So the question arises (again), I think: Is it time to “get rid of the bleach”? It’s starting to make many scientific sources question the benefit of cleaning everything all the time, either Temperate nature Which he denounced in January In his editorial, “Much attention to surfaces,” or Other expert opinions. a Modeling published at the beginning of the year It is concluded that the risk of catching COVID-19 from contaminated surfaces is generally less than 1 in 1,000,000 (per 7 days) – or in very severe cases, 1 in 10,000 when 5% of the population is a carrier of the virus in The same time, it is huge.

On the one hand, I can understand that health authorities (not just in Quebec, but in many other places as well) are reluctant to raise certain obligations, such as those that grocery stores and other companies have to wash every single cart by one. After every use. As I said, these questions are difficult to document, so there is still a degree of uncertainty. So the reaction can be defended on the side of caution. All of the studies and documents mentioned here recommend continuing to cleanse your hands – which appears to be much more effective than cleaning everything.

But on the other hand, I don’t think there isn’t yet the slightest hint of the scientific argument that COVID-19 is very primarily transmitted through the air, and that surfaces play in the worst way possible. A secondary role case, if not infinitesimal. Plus, all of this cleaning comes at a cost to the merchants, in addition to adding some heft to everyone’s Mr. and Mrs. At a time when we feel the spread of “COVID stress,” perhaps by rescinding this commitment (even if that means maintaining regular hand disinfection), we are easing the burden on everyone, and this will help respect other rules – the ones best established in science. It is the most important. Not to mention that if we impose some rules that go far beyond what is justified by science, then we run the risk of diminishing the ears of the population when we ask them to follow other instructions on the pretext that they should “trust science” …

So what do you say about it?