(New York Times) – The W.H.O.’s previous stance was that only a handful of pathogens — those that travel in small droplets and spread across long distances, like tuberculosis — could be considered airborne. But the new report suggests broader categories that do not rely on droplet size or distance spread. Such changes were contentious because they raised the prospect that more diseases might now demand costly control measures, such as hospital isolation rooms and protective gear. (Read More)