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Effectiveness of non-pharmaceutical interventions on COVID-19 transmission in 190 countries from 23 January to 13 April 2020.
Bo, Yacong; Guo, Cui; Lin, Changqing; Zeng, Yiqian; Li, Hao Bi; Zhang, Yumiao; Hossain, Md Shakhaoat; Chan, Jimmy W M; Yeung, David W; Kwok, Kin On; Wong, Samuel Y S; Lau, Alexis K H; Lao, Xiang Qian.
  • Bo Y; Jockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, China; Department of Nutrition, School of Public Health, Zhengzhou University, China.
  • Guo C; Jockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, China.
  • Lin C; Division of Environment and Sustainability, the Hong Kong University of Science and Technology, Hong Kong, China.
  • Zeng Y; Jockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, China.
  • Li HB; Shenzhen Dong Fang Tech Development Co., LTD, Shenzhen, Guangdong, China.
  • Zhang Y; Division of Environment and Sustainability, the Hong Kong University of Science and Technology, Hong Kong, China.
  • Hossain MS; Division of Environment and Sustainability, the Hong Kong University of Science and Technology, Hong Kong, China.
  • Chan JWM; Division of Environment and Sustainability, the Hong Kong University of Science and Technology, Hong Kong, China.
  • Yeung DW; Institute for the Environment, the Hong Kong University of Science and Technology, Hong Kong, China.
  • Kwok KO; Jockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, China; Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Hong Kong, China; Shenzhen Research Institute of The Chinese University of Hong Kong, Shenzhen, China.
  • Wong SYS; Jockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, China.
  • Lau AKH; Division of Environment and Sustainability, the Hong Kong University of Science and Technology, Hong Kong, China; Department of Civil and Environmental Engineering, the Hong Kong University of Science and Technology, Hong Kong, China. Electronic address: alau@ust.hk.
  • Lao XQ; Jockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, China. Electronic address: xqlao@cuhk.edu.hk.
Int J Infect Dis ; 102: 247-253, 2021 Jan.
Article in English | MEDLINE | ID: covidwho-1059688
ABSTRACT

BACKGROUND:

To evaluate and compare the effectiveness of four types of non-pharmaceutical interventions (NPIs) to contain the time-varying effective reproduction number (Rt) of coronavirus disease-2019 (COVID-19).

METHODS:

This study included 1,908,197 confirmed COVID-19 cases from 190 countries between 23 January and 13 April 2020. The implemented NPIs were categorised into four types mandatory face mask in public, isolation or quarantine, social distancing and traffic restriction (referred to as mandatory mask, quarantine, distancing and traffic hereafter, respectively).

RESULTS:

The implementations of mandatory mask, quarantine, distancing and traffic were associated with changes (95% confidence interval, CI) of -15.14% (from -21.79% to -7.93%), -11.40% (from -13.66% to -9.07%), -42.94% (from -44.24% to -41.60%) and -9.26% (from -11.46% to -7.01%) in the Rt of COVID-19 when compared with those without the implementation of the corresponding measures. Distancing and the simultaneous implementation of two or more types of NPIs seemed to be associated with a greater decrease in the Rt of COVID-19.

CONCLUSION:

Our study indicates that NPIs can significantly contain the COVID-19 pandemic. Distancing and the simultaneous implementation of two or more NPIs should be the strategic priorities for containing COVID-19.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Experimental Studies / Observational study Limits: Humans Language: English Journal: Int J Infect Dis Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: J.ijid.2020.10.066

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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Experimental Studies / Observational study Limits: Humans Language: English Journal: Int J Infect Dis Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: J.ijid.2020.10.066