[Journal of Infection] The role of community-wide wearing of face mask for control of coronavirus disease 2019 (COVID-19) epidemic due to SARS-CoV-2

Journal of Infection, 17 April 2020

Vincent C.C. Cheng, Shuk-Ching Wong, Vivien W.M. Chuang, Simon Y.C. So, Jonathan H.K. Chen, Siddharth Sridhar, Kelvin K.W. To, Jasper F.W. Chan, Ivan F.N. Hung, Pak-Leung Ho, Kwok-Yung Yuen

Cumulative number of COVID-19 in representative countries or areas with or without community-wide wearing of face mask


  • COVID-19 per-million-population in HKSAR with community-wide masking was compared to that of non-mask-wearing countries which are comparable with HKSAR
  • The COVID-19 incidence in HKSAR (129.0 per-million-population) was significantly lower (p<0.001) than that of Spain (2983.2), Italy (2250.8), Germany (1241.5), France (1151.6), U.S. (1102.8), U.K. (831.5), Singapore (259.8), and South Korea (200.5).
  • The compliance of face mask usage by HKSAR general public was 96.6% (range: 95.7% to 97.2%).
  • Community-wide mask wearing may contribute to the control of COVID-19 by reducing virus shedding in saliva and respiratory droplets from individuals with subclinical or mild COVID-19.

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