The Choice
- Cloth masks do not work against viruses. They do not provide a measurable benefit.
- Surgical masks also do not work against viruses, unless you are 50 or older, in which case they may provide 11% more protection from getting sick.
- N95 masks may likely provide benefit but only if they are well fitted while following the 4Ds, and if the wearer can tolerate the lower oxygen caused by the increase of CO2 in the breathing space of the mask.
- Do to the IFR of Covid-19 being similar to that of the 2019 Flu, mass public masking is unnecessary.
- Wearing a mask is a personal choice.