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According to the Washington Post, face masks with the coin-sized valves on the front may not be as good at preventing the spread of the novel coronavirus as the seemingly lower-tech, non-valved masks.


  1. Why are the lower-tech masks better at preventing the spread of COVID-19?
  2. Do medical masks have the valves?
  3. What does the CDC recommend for the public?
  4. Use the Internet to find the most interesting story about masks and economic impact, accounting, or finance.


Fritz, A. (2020) Why simple cloth masks without valves are better at fighting the spread of covid-19. The Washington Post, June 28 (Retrievable online at