Summer is setting in, the thermometer is climbing and the question of the use of air conditioning during a pandemic resurfaces. Especially since confined environments seem to be particularly conducive to the spread of Sars-CoV-2, as has already been observed for other coronaviruses such as Sras. A study carried out in China has thus shown that out of 318 clusters identified in 120 cities, only one had occurred outdoors, suggesting that "sharing an interior space is a major risk of infection" .
Read also: In China, a restaurant, air conditioning… and ten sick customers
The role of heating, ventilation and air conditioning (HVAC) systems in the spread of Covid-19 is the subject of several studies, the most relayed concerning the case of a restaurant in Canton, China, where a customer not yet developed symptoms was the first link in a whole chain of contamination. And only the customers who were on the “path” of the air projected by the air conditioning system were sick.
Other researchers are interested in the case of a
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