Dernière mise à jour de l’#OMS sur les modes de #transmission du #SARS-CoV-2 et les implications pour la #prévention et les #précautions ;
▻https://www.who.int/publications-detail-redirect/modes-of-transmission-of-virus-causing-covid-19-implications-for-ipc-precaution
▻https://apps.who.int/iris/rest/bitstreams/1286634/retrieve
L’OMS, tout en acceptant l’hypothèse de la transmission par #aérosol, continue de donner une importance plus grande aux gouttelettes et elle persiste à estimer que les cas #asymptomatiques sont peu contagieux.
La partie sur la transmission est résumée par Helen Branswell sur Twitter : ▻https://mobile.twitter.com/helenbranswell/status/1281274685616001024
WHO issued an update on how #Covid19 transmits. It says:
a) In some cases/places short-term aerosol transmission can’t be ruled out, though droplet & fomite transmission could also explain these cases.
b) Most transmission occurs via droplets, from symptomatic people." /
c) most transmission seems to occur when people have symptoms or just before they develop symptoms.
d) it’s not clear how often people who are truly asymptomatic — never have symptoms — transmit. Percentage thought to be low
e) Fomites (virus on surfaces) are considered a likely mode of transmission, but no clear cases yet.
f) Not clear if transmission through blood is possible; risk seems low.
