found evidence in support of masks but only for infected cases.

"All studies selected hospital cases, except one in which the cases were people with probable SARS reported to the Department of Health in the territory of Hong Kong up to 16 May 2003."

epidemiologist: "although buried a bit, a mask does NOT protect you from catching it, it keeps an infected person from transmitting it. All the other is good to go."

the buried bit is this part in the article: "Physical means might prevent the spread of virus by aerosols or large droplets from infected to susceptible people (such as by using masks and distancing measures)"

so there is no evidence on the efficacy of healthy people wearing masks. of any sort, it would seem. at least in this review.