Speech can produce jet-like transport relevant to asymptomatic spreading of virus

Speech can produce jet-like transport relevant to asymptomatic spreading of virus [Applied Physical Sciences]:

Many scientific reports document that asymptomatic and presymptomatic individuals contribute to the spread of COVID-19, probably during conversations in social interactions. Droplet emission occurs during speech, yet few studies document the flow to provide the transport mechanism. This lack of understanding prevents informed public health guidance for risk reduction and...