Source avec lien : Physical Review Applied, 18(2). 10.1103/PhysRevApplied.18.024042
Des grappes de contaminations ont été identifiées au sein de chœurs de répétition pendant la pandémie de COVID-19. En particulier, on sait que le fait de chanter et de jouer d’un instrument à vent génère une libération accrue de gouttelettes respiratoires, qui sont ensuite transportées par les flux expiratoires. En suivant l’air expiré par des chanteurs d’opéra professionnels et des musiciens de l’orchestre du MET à New York, nous mesurons l’étendue spatiale des différents flux d’air dans l’opéra.
Clusters of contaminations have been identified within rehearsing choirs during the COVID-19 pandemic. In particular, singing and playing wind instruments are known to generate enhanced release of respiratory droplets, which are then transported by the expiratory flows. By tracking the air exhaled by professional opera singers and musicians from the MET Orchestra in New York City, we measure the spatial extent of the various air flows in opera. While loud singing is often associated with fast flows, professional opera singers and musicians are usually exhaling air flows slower than the air jets exhaled by a person breathing at rest. However, we identify a few situations leading to the release of rapid air jets that are able to enhance the transport of pathogenic droplets within an orchestra. Finally, we show how singing with a facemask and covering the bell of a wind instrument provide a strong reduction of the transport of respiratory droplets, in addition to the filtration features of a mask.