An experimental study of the efficacy of gauze face masks

Архивировано 27.05.2020: kellogg-1920.pdf

Источник: W. H. Kellogg, and Grace MacMillan "AN EXPERIMENTAL STUDY OF THE EFFICACY OF GAUZE FACE MASKS", American Journal of Public Health 10, no. 1 (January 1, 1920): pp. 34-42

Masks have not been proved efficient enough to warrant compulsory application for the checking of epidemics, according to Dr. Kellogg, who has conducted a painstaking investigation with gauzes. This investigation is scientific in character, omitting no one of the necessary factors. It ought to settle the much argued question of masks for the public.