We are a team of academics, physicians, trainees, people who sew, and other volunteers.  We've been working on identifying published, peer-reviewed literature to inform the choice of materials and designs for cloth masks, communicating around materials and design, and curating high-quality information on mask use and mask cleaning.

At present, this site and all our work is on a voluntary basis, without funding.

Our academic work includes an opinion piece available here and a narrative review available here. Our plain language summary is available here.


Editor in chief

Catherine M Clase MB BChir MSc FRCPC

Associate professor, Medicine, McMaster University, Hamilton, ON, Canada

Associate member, Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada

Member, Centre of Excellence in Protective Equipment and Materials, McMaster University, Hamilton, ON, Canada

Nephrologist, St Joseph’s Healthcare Hamilton, ON, Canada

Deputy editors

Juan Jesus Carrero Pharm PhD

Professor, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden


Edouard L Fu (lead, data extraction team)

MD PhD program, Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands

Academic team

Aurneen Ashur

Life Sciences BSc program, McMaster University, Hamilton, Canada


Rupert CL Beale MB BChir PhD

Group Leader, Francis Crick Institute, London, UK


Imogen A Clase

Westdale Secondary School, Hamilton, ON, Canada


Meg J Jardine MBBS PhD

Associate Professor, Faculty of Medicine, UNSW Sydney, Australia

Program Head, Innovation & Kidney Research, The George Institute for Global Health, Sydney, Australia

Nephrologist, Concord Repatriation General Hospital, Sydney, Australia


Meera Joseph MD

Nephrology training program, McMaster University, Hamilton, ON, Canada


Grace Kansiime MBChB MMed

Physician, Internal Medicine Department, Mulago National Referral Hospital, Kampala, Uganda


Johannes FE Mann MD PhD

Professor of medicine, Friedrich Alexander University of Erlangen-Nurnberg, Germany
Nephrologist, KfH Kidney Center, Munich-Schwabing, Germany


Roberto Pecoits-Filho MD PhD

DOPPS Program Area, Arbor Research Collaborative for Health, Ann Arbor, Michigan, USA

School of Medicine, Pontifical Catholic University of Paraná, Curitiba, Brazil


Wolfgang C Winkelmayer MD ScD

Gordon A Cain Chair in Nephrology, Medicine-Nephrology, Baylor College of Medicine, Houston, Texas, United States

Professor of Medicine, Baylor College of Medicine, Houston, Texas, United States

Zain Chagla MD MSc (website peer review)

Associate Professor, Division of Infectious Diseases, McMaster University, Hamilton , ON, Canada


Website and practical masks team

Roberta Crowther

Journey’s End Quilting, ON, Canada


Beerpal Plaha

Family medicine program, University of Toronto, Toronto, ON, Canada


Sophie Sutherland

Anna Chaplain to Older People, Bromley Parish Church

Hon Chaplain and Bank Chaplain King's College Hospital NHS Foundation Trust

Visual abstract

Edgar Lerma @edgarvlermamd


Augusto Cesar Santos Jr @acssjr

Fernanda Arce-Amare @FerArceAmare

Rolando Claure

Translations (Translations are unavailable after the update 2021-01-29)

Fredrik Stenström (Swedish)

Guobin Su (Chinese)

Hong Xu (Chinese)

Ailema Gonzalez (Spanish)

Aileen Kharat (French)


Sara Alas|Niko Apparel

Mark Diamond|Veratex Lining Ltd

Scott Laengert

Jonathan Clase