This Friday morning, Doctor Jimmy Mohamed, health consultant for Europe 1, explains to us how the use of CO2 detectors would make it possible to live better with the coronavirus, while limiting the risks of contamination.

Every morning on Europe 1, our health consultant, Doctor Jimmy Mohamed, gives advice and tips for taking care of yourself, and above all preserving your health on a daily basis.

This Friday, he is looking at a new weapon in the fight against the coronavirus: carbon dioxide (CO2) detectors, small devices that could help us to better calibrate our behavior in the face of the coronavirus.

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 Find Jimmy Mohamed's chronicle in replay and podcast here

Why is the CO2 concentration in a room a risk indicator in the face of Covid-19?

"When you breathe, you will take in oxygen and you will release carbon dioxide, which will accumulate in the room you are in. The higher the concentration of CO2, the more likely you are to catch the coronavirus, because it means that the room is poorly ventilated and that you end up exposed to the many aerosols released by the other people who are with you.

The problem is, you can't tell when there's a lot of carbon dioxide in a room and when a window should be opened.

This detector - count anyway 200 euros to acquire it - allows you to classify your situation according to three critical levels: green, the room is well ventilated;

yellow, this means that you have to start aeration;

red, the carbon dioxide reading is high, a window must be opened immediately.

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In what type of situation should a CO2 detector be used?

In a classroom, for example, with 30 or 40 children, this device indicates when to ventilate.

Moreover, this small machine is already tested in the classes of CE2, CM1 and CM2 of the school of Heidwiller, a village of Haut-Rhin.

In Japan, in some restaurants, this device informs customers about the quality of the air they breathe.

We can also imagine installing these detectors in sports halls, still closed in France, where they would make it possible to know whether the ventilation is sufficient in relation to the number of practitioners. 

Finally, CO2 detectors could have a role to play in detecting places of contamination, such as public transport, which we are told is reliable.

Ultimately inexpensive compared to the sums already devoted to the fight against the pandemic, the carbon dioxide detector would certainly make it possible to readjust our control systems more effectively. "