COVID-19 update: WHO defines airborne spread

LONDON - The World Health Organization and around 500 experts have agreed for the first time on what it means for a disease to spread through the air, in a bid to avoid the confusion early in the COVID-19 pandemic that some scientists have said cost lives. The Geneva-based UN health agency released a technical document on the topic on Thursday. It said it was the first step towards working out how to better prevent this kind of transmission, both …