Covid19 scientific data in favor of putting on a mask

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The big variety of people with no signs and symptoms and their energy of contagiousness as properly as the feasible airborne transmission of the virus: as numerous knowledge which fortify the arguments in favor of wearing a mask for all.

How to understand the modify in situation of the French authorities vis-à-vis the wearing of masks? face mask disposable 3 ply mentioned on March 25 that citizens "did not want masks" when barrier gestures ended up nicely highly regarded, 9 times later on, Jérôme Salomon, the director basic of wellness , said "stimulate the general public, if they wish, to wear masks and in specific alternative masks (other than surgical or FFP2)." Because then, the Odoxa-Dentsu Consulting poll carried out on April eight and 9 for France Information and Le Figaro exhibits that 76% of French individuals imagine that the federal government has lied to them on this position, believing that the very first tips were only aimed at alleviating the lack of masks to reserve them for health care experts. Nonetheless, scientific arguments attest - as knowledge of the SARS-CoV-two virus becomes clearer - that barrier gestures can, in reality, be efficiently supplemented by wearing a mask, even in fabric. Review of the major arguments in favor of its putting on.

So-called "asymptomatic" men and women transmit the virus properly

The 1st results of a study carried out because the stop of February by an Inserm team, led by Professor Xavier Duval, and made community on April one, confirmed that “there are numerous people in whom an excretion of the virus at the stage of their saliva and their nasal cavity is shown by systematic nasopharyngeal swabs, before they build indicators - or even with no them establishing ”. In other words and phrases, so-known as asymptomatic people can peddle the virus with out realizing it. According to Inserm, "these info let us to greater comprehend the conduct of the virus and to swiftly adapt the measures to defend ourselves from it," donning a mask is 1 of these "adaptive" measures.

Asymptomatic folks are as contagious as the unwell
In addition to getting a viral load in men and women with no signs, they can be as contagious as the unwell. Researchers at the College of Hong Kong have highlighted this by tracing the chain of transmission of 157 symptomatic and thirty asymptomatic instances in the Chinese town of Ningbo. Their final results printed on April two on the prepublication web site MedRxiv display “that there is no difference in the costs of transmission of the coronavirus among symptomatic and asymptomatic patients”. This conclusion only confirms that of another staff of scientists who had also investigated at Ningbo. Adhere to-up of 2,147 close contacts proven an infection charge of 6.three% in confirmed circumstances and in asymptomatic patients. A difference that is not substantial (Chinese Journal of Epidemiology).