Pros, cons, “yes, but”, “no, unless” … Since the beginning of the epidemic, it is little to say that the question of the effectiveness of wearing a mask in the general population to limit there is no consensus on the spread of the coronavirus. Works unveiled last Sunday brought water to the “pros” mill. The Pr Yuen Kwok-yung, a microbiologist at the University of Hong Kong, presented an experiment tending to prove that the mask does indeed limit airborne transmission of the coronavirus.
To be convinced, the Hong Kong team worked with golden hamsters. The researchers divided 52 animals into two groups, the first of which (a quarter of the individuals) were inoculated with the virus. Then all of them were put in close cages two by two: in one a sick animal, in the other three healthy rodents. Air flow was generated from the sick cage to the healthy cage. Between the cages, the researchers placed either nothing at all or a surgical mask