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In this study, by using contact tracing data collected during an Omicron\u2010predominant epidemic phase in Hong Kong, we estimated the mean serial interval of SARS\u2010CoV\u20102 Omicron BA.4, BA.5, and BA.2.12.1 variants at 2.8\u00a0days (95% credible interval [CrI]: 1.5, 6.7), 2.7\u00a0days (95% CrI: 2.1, 3.6), and 4.4\u00a0days (95% CrI: 2.6, 7.5), respectively, with adjustment for right truncation and sampling bias. The short serial interval for the current circulating variant indicated that outbreak mitigations through contact tracing and case isolation would be quite challenging.<\/jats:p>","DOI":"10.1111\/irv.13105","type":"journal-article","created":{"date-parts":[[2023,2,8]],"date-time":"2023-02-08T21:44:38Z","timestamp":1675892678000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Estimating the serial intervals of SARS\u2010CoV\u20102 Omicron BA.4, BA.5, and BA.2.12.1 variants in Hong Kong"],"prefix":"10.1111","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9002-0483","authenticated-orcid":false,"given":"Zihao","family":"Guo","sequence":"first","affiliation":[{"name":"JC School of Public Health and Primary Care, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shi","family":"Zhao","sequence":"additional","affiliation":[{"name":"JC School of Public Health and Primary Care, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"},{"name":"Centre for Health Systems and Policy Research, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carrie Ho Kwan","family":"Yam","sequence":"additional","affiliation":[{"name":"JC School of Public Health and Primary Care, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"},{"name":"Centre for Health Systems and Policy Research, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Conglu","family":"Li","sequence":"additional","affiliation":[{"name":"JC School of Public Health and Primary Care, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoting","family":"Jiang","sequence":"additional","affiliation":[{"name":"JC School of Public Health and Primary Care, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tsz Yu","family":"Chow","sequence":"additional","affiliation":[{"name":"JC School of Public Health and Primary Care, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"},{"name":"Centre for Health Systems and Policy Research, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5610-1298","authenticated-orcid":false,"given":"Ka Chun","family":"Chong","sequence":"additional","affiliation":[{"name":"JC School of Public Health and Primary Care, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"},{"name":"Centre for Health Systems and Policy Research, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eng Kiong","family":"Yeoh","sequence":"additional","affiliation":[{"name":"JC School of Public Health and Primary Care, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"},{"name":"Centre for Health Systems and Policy Research, Faculty of Medicine Chinese University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,2,8]]},"reference":[{"key":"e_1_2_8_2_1","unstructured":"Weekly epidemiological update on COVID\u201019\u201026 October 2022. 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