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Taking into account the strict measures implemented due to the coronavirus disease 2019 pandemic and the desire of people to reclaim what is perceived as lost time, mass gatherings this summer were highly attended. Based on data for the secondary attack rate among unvaccinated contacts from endemic countries, we estimate that, on average, &amp;gt;1 secondary case is anticipated per infectious person if he\/she has a high number of group contacts (&amp;gt;30) or &amp;gt;8 close contacts. Although the role of group contacts in mass gatherings is uncertain (less likely to involve physical contact, shorter duration), close contacts associated with the event (eg, intimate\/sexual contact with other attendees) might be the amplifying event. Enforcing awareness, early recognition, and engaging affected populations in the monkeypox response are important to control transmission.<\/jats:p>","DOI":"10.1093\/ofid\/ofac501","type":"journal-article","created":{"date-parts":[[2022,10,25]],"date-time":"2022-10-25T03:13:02Z","timestamp":1666667582000},"source":"Crossref","is-referenced-by-count":4,"title":["Transmission Potential of Human Monkeypox in Mass Gatherings"],"prefix":"10.1093","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9430-7614","authenticated-orcid":false,"given":"Vana","family":"Sypsa","sequence":"first","affiliation":[{"name":"Dept. of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens , Athens , Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ioannis","family":"Mameletzis","sequence":"additional","affiliation":[{"name":"World Health Organization , Geneva , Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sotirios","family":"Tsiodras","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, Attikon University Hospital, Medical School, National and Kapodistrian University of Athens , Athens , Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2022,10,25]]},"reference":[{"key":"2022110210082088200_ofac501-B1","article-title":"Second meeting of the International Health Regulations (2005) (IHR) Emergency Committee regarding the multi-country outbreak of monkeypox","author":"World Health Organization"},{"key":"2022110210082088200_ofac501-B2","article-title":"2022 Monkeypox Outbreak Global Map","author":"CDC"},{"key":"2022110210082088200_ofac501-B3","doi-asserted-by":"crossref","first-page":"679","DOI":"10.1056\/NEJMoa2207323","article-title":"Monkeypox virus infection in humans across 16 countries\u2014April-June 2022","volume":"387","author":"Thornhill","year":"2022","journal-title":"N Engl J Med"},{"key":"2022110210082088200_ofac501-B4","doi-asserted-by":"crossref","first-page":"929","DOI":"10.1016\/S1473-3099(22)00354-1","article-title":"Monkeypox outbreaks outside endemic regions: scientific and social priorities","volume":"22","author":"Zumla","year":"2022","journal-title":"Lancet Infect Dis"},{"key":"2022110210082088200_ofac501-B5","article-title":"Monkeypox is spreading among gay men worldwide","author":"Aidsmap","year":"2022"},{"key":"2022110210082088200_ofac501-B6","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1016\/S1473-3099(11)70246-8","article-title":"Global perspectives for prevention of infectious diseases associated with mass gatherings","volume":"12","author":"Abubakar","year":"2012","journal-title":"Lancet Infect Dis"},{"key":"2022110210082088200_ofac501-B7","article-title":"Monkeypox & mass gatherings. 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