Airborne transmission of the novel coronavirus (COVID-19) can occur during medical procedures that generate aerosols, Reuters quoted the World Health Organization (WHO) as saying today. The Organization further said some outbreak reports related to indoor crowded spaces have suggested the possibility of aerosol transmission, combined with droplet transmission, such as during choir practice, in restaurants or in fitness classes. The WHO on Tuesday acknowledged "emerging evidence" of the airborne spread of the novel coronavirus, after a group of scientists urged the global body to update its guidance on how the respiratory disease spread.