On the 31st of August 2020 the Swedish Public Health Agency posted on its website a list of published studies on the anti-infective effect of face masks a list that was updated and expanded on the 30th of November. It is a valid list, and only the relative order of the studies is a bit misleading. The list begins with four articles that provide relatively weak support for the benefits of protection by masks, and is then followed by about forty-five articles that provide relatively consistent support for the anti-infective effects of masks for Covid-19. On the Public Health Agency's list, an exact quote from each study is attached here, in yellow, of the study's conclusion.
The Swedish Public Health Agency's list of studies on face masks (in Swedish).
The Swedish Public Health Agency's list of studies on face masks (in English).
Science forum Covid-19 works extensively with information and information about the ongoing pandemic and related topics and areas. Our goals are to reduce morbidity and mortality in Covid-19, to reduce the chronic disease states of those who survive Covid-19. In the association, we have expertise in areas such as virology, biology, molecular biology, epidemiology, infectious diseases, lung diseases, mathematics, political science, psychology, ethics and risk research. The chairman of the association is Professor Emeritus Anders Vahlne, more information at https://vetcov19.se/