I really don't like it when people are deceived. I especially don't like it when a medical blogger deceives his readers.
Read my article about nonsense about airing as prevention of colds? That immunologist was offended and began to get out. And more recently, I wrote about the fact that such medical bloggers fool people, take the closest English-language text that is in tune with the topic and greatly distort its meaning.
Exactly the same story happened with the article on airing. The immunologist has rolled out a link to a book about the health benefits of ventilation.
There in this book they write exactly the same thing that I said. They write that airing is useful for preventing airborne infections.
Airborne transmission
Remember the airborne infections? These are measles, tuberculosis and smallpox. When smallpox was brought to Moscow from India in 1959, there was an outbreak of this terrible infection, which our specialists managed to brilliantly localize.
During that epidemic, people who lived on different floors of the same building were infected with smallpox. The virus flew to their home through ventilation. This is called airborne spread of the infection.
They get infected with tuberculosis in about the same way. Patients with tuberculosis should have very high air exchange in wards. This is necessary so that the infection escapes along with the air into the exhaust ventilation.
I used to do a lot of aerosols within my medical profession. As far as I remember, there should be a twelve-fold air exchange for the tuberculosis ward. This is a very powerful ventilation. They say that if you cannot organize such a hood, then you can use HEPA filters, which will retain some of the infection.
Common cold and children
When it comes to airing in children's educational institutions, they mean the common cold.
The common cold is caused by viruses that live in the upper respiratory tract. For example, rhinovirus. This is a harmless infection. Often, even the temperature does not rise from it. But such an infection is not transmitted through the air, but with drops and splashes.
If a person with a cold sits next to you, sneezes or coughs, then a spray of the virus is flying at you. If they get in your eyes, nose, or mouth, you could get a cold. In the same way, you can get infected if you touch objects splashed with other people's snot, and then get into your eyes, nose or mouth.
Hence the methods of preventing colds. You need to wash your hands more often, wash and disinfect surfaces. If you yourself get sick, then cough and sneeze into a handkerchief or elbow bend. There are no tips for airing the room in such recommendations.
Lies
The funny thing is that in the link given by that immunologist, everything is exactly what it says.
No information exists on the impact of ventilation rate on transmission of droplet-transmitted diseases. This agrees with the physics of droplet transmission, which shows that general ventilation should not affect large droplet transmission.
Translated, this means that there is no evidence that ventilation helps prevent airborne infection. Ventilation for these large droplets is simply not physically affected.
From which the conclusion: some doctors come up with their own rules, and then desperately defend them. Even somehow disgusting... Really?
If you have any doubts about preventing a cold, then consult your doctor. He is officially responsible for you.
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What should and should not be read on medicine: I teach materiel
How a doctor hides his lies
