The key part here is "Facemasks may be in short supply". There is aplenty of reasons why healthy individuals should wear the masks, including: 1. They could b

The key part here is "Facemasks may be in short supply". There is aplenty of reasons why healthy individuals should wear the masks, including: 1. They could be sick, but don't know it 2. Sick people avoid masks if healthy people don't have them 3. It could help them avoid touching their faces