Fear of the spreading coronavirus has led to a global run on sales of face masks despite medical experts' advice that most people who aren't sick don't need to wear them.
Many businesses are sold out, while others are limiting how many a customer can buy. Amazon is policing its site, trying to make sure sellers don't gouge panicked buyers.
In South Korea, hundreds lined up to buy masks from a discount store. Rumors that toilet paper and napkins could be used as masks have emptied store shelves in Asia of paper goods over the past few weeks.
Ordinary people trying to protect themselves from the outbreak are not the only ones encountering shortages. Some health care professionals are seeing them as well.
