Efficacy of masking with respect to preventing viral transmission has been studied extensively for many decades and was generally not found to be an effective means to prevent viral transmission. Following are some of these studies. Visit our Library for PDF files.
***NEW April 2023*** Face mask recommendations in schools did not impact COVID-19 incidence among 10–12-year-olds in Finland – join point regression analysis
A cluster randomized clinical trial comparing fit-tested and non-fit-tested N95 respirators to medical masks to prevent respiratory virus infection in health care workers
A cluster randomized trial of cloth masks compared with medical masks in healthcare workers
An experimental study of the efficacy of gauze face masks.
Assessment of influenza virus exposure and recovery from contaminated surgical masks and N95 respirators
Assessment of Proficiency of N95 Mask Donning Among the General Public in Singapore
Comparison of Filtration Efficiency and Pressure Drop in Anti-Yellow Sand Masks, Quarantine Masks, Medical Masks, General Masks, and Handkerchiefs
Comparison of the Filter Efficiency of Medical Nonwoven Fabrics against Three Different Microbe Aerosols
COMMENTARY: Masks-for-all for COVID-19 not based on sound data
Contamination by respiratory viruses on outer surface of medical masks used by hospital healthcare workers
Corona children studies “Co-Ki”: First results of a Germany-wide registry on mouth and nose covering (mask) in children
COVID-19 Mitigation Practices and COVID-19 Rates in Schools: Report on Data from Florida, New York and Massachusetts
Cutting Edge: Hypoxia-Inducible Factor 1α and Its Activation-Inducible Short Isoform I.1 Negatively Regulate Functions of CD4+ and CD8+ T Lymphocytes
Der Maskenzwang ist verantwortlich für schwere psychische Schäden und die Schwächung des Immunsystems (German) – The mask compulsion is responsible for severe psychological damage and the weakening of the immune system
Do physical measures such as hand-washing or wearing masks stop or slow down the spread of respiratory viruses?
Effect of a surgical mask on six minute walking distance
Effectiveness of Masks and Respirators Against Respiratory Infections in Healthcare Workers: A Systematic Review and Meta-Analysis
Effectiveness of N95 respirators versus surgical masks in protecting health care workers from acute respiratory infection: a systematic review and meta-analysis
Effectiveness of Surgical and Cotton Masks in Blocking SARS–CoV-2: A Controlled Comparison in 4 Patients
“Exercise with facemask; Are we handling a devil’s sword?” – A physiological hypothesis
Face Coverings, Aerosol Dispersion and Mitigation of Virus Transmission Risk
Facemask against viral respiratory infections among Hajj pilgrims: A challenging cluster-randomized trial
Face masks and similar barriers to prevent respiratory illness such as COVID-19: A rapid systematic review
Facemasks in the COVID-19 era: A health hypothesis
Face masks, lies, damn lies, and public health officials: “A growing body of evidence”
Healthcare personnel exposure in an emergency department during influenza season
Is a mask necessary in the operating theatre?
It Is Time to Address Airborne Transmission of Coronavirus Disease 2019 (COVID-19)
Mask use in the context of COVID-19
Maskentragen noch ungesünder als gedacht (German) – Wearing masks is even more unhealthy than expected
Masking lack of evidence with politics
Measures do not prevent deaths, transmission is not by contact, masks provide no benefit, vaccines are inherently dangerous: Review update of recent science relevant to COVID-19 policy
More deception: KDHE hid data to justify mask mandate
Mund-Nasen-Schutz in der Öffentlichkeit: Keine Hinweise für eine Wirksamkeit (German) – Mouth and nose protection in public: No evidence of effectiveness
N95 Respirators vs Medical Masks for Preventing Influenza Among Health Care PersonnelA Randomized Clinical Trial
Nonpharmaceutical Measures for Pandemic Influenza in Nonhealthcare Settings—Personal Protective and Environmental Measures
On the Suppressed Danish Mask Study
Performance of an N95 Filtering Face piece Particulate Respirator and a Surgical Mask During Human Breathing: Two Pathways for Particle Penetration
Physical interventions to interrupt or reduce the spread of respiratory viruses. Part 1 – Face masks, eye protection and person distancing: systematic review and meta-analysis
Postoperative wound infections and surgical face masks: A controlled study
Preliminary report on surgical mask induced deoxygenation during major surgery
Respiratory consequences of N95-type Mask usage in pregnant healthcare workers-a controlled clinical study
Respiratory Virus Shedding in Exhaled Breath and Efficacy of Face Masks
Revealing the role of CD4(+) T cells in viral immunity.
Review of scientific reports of harms caused by face masks, up to February 2021
Schutzmasken verringern Belastbarkeit (German) – Protective masks reduce resilience
Simple Respiratory Protection—Evaluation of the Filtration Performance of Cloth Masks and Common Fabric Materials Against 20–1000 nm Size Particles
Surgical face masks in modern operating rooms—a costly and unnecessary ritual?
Surgical masks as source of bacterial contamination during operative procedures
The physiological impact of wearing an N95 mask during hemodialysis as a precaution against SARS in patients with end-stage renal disease
The use of masks and respirators to prevent transmission of influenza: a systematic review of the scientific evidence
Unmasking the surgeons: the evidence base behind the use of face masks in surgery
Universal Masking in Hospitals in the Covid-19 Era
Using face masks in the community: first update
Use of surgical face masks to reduce the incidence of the common cold among health care workers in Japan: a randomized controlled trial
WHO Mask Study Seriously Flawed
