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- Publisher Website: 10.1016/j.jinf.2021.04.019
- Scopus: eid_2-s2.0-85105094193
- PMID: 33895227
- WOS: WOS:000663550000025
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Article: COVID-19 transmission in Hong Kong despite universal masking
Title | COVID-19 transmission in Hong Kong despite universal masking |
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Authors | |
Keywords | COVID-19 SARS-CoV-2 Face masks Transmission Epidemiology |
Issue Date | 2021 |
Publisher | WB Saunders Co Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jinf |
Citation | Journal of Infection, 2021, v. 83 n. 1, p. 92-95 How to Cite? |
Abstract | Objectives:
mask-wearing outside the home has been almost universal in Hong Kong since late January 2020 with very high compliance. Nevertheless, community spread of COVID-19 has still occurred. We aimed to assess the settings where COVID-19 transmission occurred and determine the fraction of transmission events that occurred in settings where masks are not usually worn.
Methods:
we reviewed detailed information provided by the Hong Kong Department of Health on local COVID-19 cases diagnosed up to 30 September 2020 to determine the most likely settings in which transmission occurred. We classified them in probably mask-on or mask-of and compared the prevalence of asymptomatic infections in these settings.
Results:
among the 2425 cases (65.3%, 2425/3711) with information on transmission setting, 77.6% of the transmission occurred in household and social settings where face masks are not usually worn. Infections that occurred in mask-on settings were more likely to be asymptomatic (adjusted odds ratio 1.33; 95% confidence interval: 1.04, 1.68).
Conclusions:
we conclude that universal mask-wearing can reduce transmission, but transmission can continue to occur in settings where face masks are not usually worn. The higher proportion of asymptomatic cases in mask-on settings could be related to a milder disease presentation or earlier case detection. |
Persistent Identifier | http://hdl.handle.net/10722/304158 |
ISSN | 2023 Impact Factor: 14.3 2023 SCImago Journal Rankings: 2.669 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Martin Sanchez, M | - |
dc.contributor.author | Lim, WW | - |
dc.contributor.author | Yeung, A | - |
dc.contributor.author | Adam, DC | - |
dc.contributor.author | Ali, ST | - |
dc.contributor.author | Lau, EHY | - |
dc.contributor.author | Wu, P | - |
dc.contributor.author | Yuen, KY | - |
dc.contributor.author | Leung, GM | - |
dc.contributor.author | Cowling, BJ | - |
dc.date.accessioned | 2021-09-23T08:56:02Z | - |
dc.date.available | 2021-09-23T08:56:02Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Journal of Infection, 2021, v. 83 n. 1, p. 92-95 | - |
dc.identifier.issn | 0163-4453 | - |
dc.identifier.uri | http://hdl.handle.net/10722/304158 | - |
dc.description.abstract | Objectives: mask-wearing outside the home has been almost universal in Hong Kong since late January 2020 with very high compliance. Nevertheless, community spread of COVID-19 has still occurred. We aimed to assess the settings where COVID-19 transmission occurred and determine the fraction of transmission events that occurred in settings where masks are not usually worn. Methods: we reviewed detailed information provided by the Hong Kong Department of Health on local COVID-19 cases diagnosed up to 30 September 2020 to determine the most likely settings in which transmission occurred. We classified them in probably mask-on or mask-of and compared the prevalence of asymptomatic infections in these settings. Results: among the 2425 cases (65.3%, 2425/3711) with information on transmission setting, 77.6% of the transmission occurred in household and social settings where face masks are not usually worn. Infections that occurred in mask-on settings were more likely to be asymptomatic (adjusted odds ratio 1.33; 95% confidence interval: 1.04, 1.68). Conclusions: we conclude that universal mask-wearing can reduce transmission, but transmission can continue to occur in settings where face masks are not usually worn. The higher proportion of asymptomatic cases in mask-on settings could be related to a milder disease presentation or earlier case detection. | - |
dc.language | eng | - |
dc.publisher | WB Saunders Co Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jinf | - |
dc.relation.ispartof | Journal of Infection | - |
dc.subject | COVID-19 | - |
dc.subject | SARS-CoV-2 | - |
dc.subject | Face masks | - |
dc.subject | Transmission | - |
dc.subject | Epidemiology | - |
dc.title | COVID-19 transmission in Hong Kong despite universal masking | - |
dc.type | Article | - |
dc.identifier.email | Martin Sanchez, M: mmartin@hku.hk | - |
dc.identifier.email | Yeung, A: amy99@HKUCC-COM.hku.hk | - |
dc.identifier.email | Adam, DC: dcadam@hku.hk | - |
dc.identifier.email | Ali, ST: alist15@hku.hk | - |
dc.identifier.email | Lau, EHY: ehylau@hku.hk | - |
dc.identifier.email | Wu, P: pengwu@hku.hk | - |
dc.identifier.email | Yuen, KY: kyyuen@hkucc.hku.hk | - |
dc.identifier.email | Leung, GM: gmleung@hku.hk | - |
dc.identifier.email | Cowling, BJ: bcowling@hku.hk | - |
dc.identifier.authority | Ali, ST=rp02673 | - |
dc.identifier.authority | Lau, EHY=rp01349 | - |
dc.identifier.authority | Wu, P=rp02025 | - |
dc.identifier.authority | Yuen, KY=rp00366 | - |
dc.identifier.authority | Leung, GM=rp00460 | - |
dc.identifier.authority | Cowling, BJ=rp01326 | - |
dc.description.nature | link_to_OA_fulltext | - |
dc.identifier.doi | 10.1016/j.jinf.2021.04.019 | - |
dc.identifier.pmid | 33895227 | - |
dc.identifier.pmcid | PMC8061183 | - |
dc.identifier.scopus | eid_2-s2.0-85105094193 | - |
dc.identifier.hkuros | 325235 | - |
dc.identifier.hkuros | 334171 | - |
dc.identifier.volume | 83 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 92 | - |
dc.identifier.epage | 95 | - |
dc.identifier.isi | WOS:000663550000025 | - |
dc.publisher.place | United Kingdom | - |