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If a traveler carrying dengue virus visits open green space and is bitten by mosquitoes, a local outbreak can ensue. In the present study, we aimed to understand the movement patterns of international travelers in Tokyo using mobile phone data, with the goal of identifying geographical foci of dengue transmission. We analyzed datasets based on mobile phone access to WiFi systems and measured the spatial distribution of international visitors in Tokyo on two specific dates (one weekday in July 2017 and another weekday in August 2017). Mobile phone users were classified by nationality into three groups according to risk of dengue transmission. Sixteen national parks were selected based on their involvement in a 2014 dengue outbreak and abundance of <jats:italic>Aedes<\/jats:italic> mosquitoes. We found that not all national parks were visited by international travelers and that visits to cemeteries were very infrequent. We also found that travelers from countries with high dengue prevalence were less likely to visit national parks compared with travelers from dengue-free countries. Travelers from countries with sporadic dengue cases and countries with regional transmission tended to visit common destinations. By contrast, the travel footprints of visitors from countries with continuous dengue transmission were focused on non-green spaces. Entomological surveillance in Tokyo has been restricted to national parks since the 2014 dengue outbreak. However, our results indicate that areas subject to surveillance should include both public and private green spaces near tourist sites.<\/jats:p>","DOI":"10.1186\/s12976-021-00149-8","type":"journal-article","created":{"date-parts":[[2021,10,4]],"date-time":"2021-10-04T16:12:52Z","timestamp":1633363972000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Analysis of international traveler mobility patterns in Tokyo to identify geographic foci of dengue fever risk"],"prefix":"10.1186","volume":"18","author":[{"given":"Baoyin","family":"Yuan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hyojung","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0941-8537","authenticated-orcid":false,"given":"Hiroshi","family":"Nishiura","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,10,3]]},"reference":[{"key":"149_CR1","doi-asserted-by":"publisher","first-page":"259","DOI":"10.1093\/ije\/6.3.259","volume":"6","author":"RM Prothero","year":"1977","unstructured":"Prothero RM. 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Nishiura is the Editor-in-Chief of Theoretical Biology and Medical Modelling.\u00a0This does not alter the authors\u2019 adherence to all the Theoretical Biology and Medical Modelling policies on sharing\u00a0data and materials.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"17"}}