Western Pacific Surveillance and Response最新文献

{"title":"Pulmonary tuberculosis and melioidosis coinfection in Brunei Darussalam: the importance of awareness and screening.","authors":"Abdur Rahman Rubel,&nbsp;Babu Ivan Mani,&nbsp;Panduru Venkata Kishore,&nbsp;Vui Heng Chong","doi":"10.5365/wpsar.2022.13.4.957","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.4.957","url":null,"abstract":"<p><p>Both tuberculosis (TB) and melioidosis are endemic to certain parts of the world, including Brunei Darussalam, with TB being more widespread. Despite this, coinfection with TB and melioidosis is rarely encountered and reported. Although still uncommon, there has been an increase in the number of cases of this coinfection reported during the past 10 years, all of which have been in India and the World Health Organization's Western Pacific Region. We report a case of coinfection with pulmonary TB and melioidosis in a patient with poorly controlled diabetes mellitus. This 64-year-old man presented with symptoms and radiological features of pulmonary TB, confirmed by sputum smear, but sputum culture also yielded <i>Burkholderia pseudomallei</i>, the pathogen that causes melioidosis. Coinfection was detected due to our practice of routinely screening for other infections in patients suspected or confirmed to have pulmonary TB. This highlights the importance of awareness of melioidosis and the need to consider screening for infection, especially in endemic regions.</p>","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":"13 4","pages":"1-6"},"PeriodicalIF":1.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9912290/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9326123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"COVID-19 symptom duration: associations with age, severity and vaccination status in Brunei Darussalam, 2021.","authors":"Shi Ying Tan,&nbsp;Shyh Poh Teo,&nbsp;Muhd Syafiq Abdullah,&nbsp;Pui Lin Chong,&nbsp;Rosmonaliza Asli,&nbsp;Babu Ivan Mani,&nbsp;Natalie Riamiza Momin,&nbsp;Adrian Chin Ann Lim,&nbsp;Noor Affizan Rahman,&nbsp;Chee Fui Chong,&nbsp;Vui Heng Chong","doi":"10.5365/wpsar.2022.13.4.941","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.4.941","url":null,"abstract":"<p><strong>Objective: </strong>This retrospective, cross-sectional, observational study assessed the duration of coronavirus disease 2019 (COVID-19) symptoms during the second wave in Brunei Darussalam.</p><p><strong>Methods: </strong>Data from COVID-19 cases admitted to the National Isolation Centre during 7-30 August 2021 were included in the study. Symptom onset and daily symptom assessments were entered into a database during hospitalization and disease was categorized by severity. The time between symptom onset and hospital admission, the duration of symptoms and length of hospitalization were assessed separately by age group, disease severity and vaccination status using one-way analysis of variance with Bonferroni post hoc corrections.</p><p><strong>Results: </strong>Data from 548 cases were included in the study: 55.7% (305) of cases were male, and cases had a mean age of 33.7 years. Overall, 81.3% (446) reported symptoms at admission (mean number of symptoms and standard deviation: 2.8 ± 1.6), with cough (59.1%; 324), fever (38.9%; 213) and sore throat (18.4%; 101) being the most common. Being older, having more severe disease and being unvaccinated were significantly associated with the time between symptom onset and hospital admission, symptom duration and length of hospitalization.</p><p><strong>Discussion: </strong>Knowing which factors predict the duration of COVID-19 symptoms can help in planning management strategies, such as the duration of isolation, predict the length of hospitalization and treatment, and provide more accurate counselling to patients regarding their illness.</p>","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":"13 4","pages":"1-9"},"PeriodicalIF":1.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9912283/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9326128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mass COVID-19 testing of asymptomatic health-care workers in a tertiary hospital during an outbreak in another hospital in Singapore: an effective strategy?","authors":"William T Wang,&nbsp;Hwang Ching Chan,&nbsp;Jyoti Somani,&nbsp;See Ming Lim","doi":"10.5365/wpsar.2022.13.4.951","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.4.951","url":null,"abstract":"In response to a COVID-19 outbreak within a hospital in Singapore, a single mass swab exercise was conducted at another tertiary hospital to detect possible inter-hospital transmission. The exercise yielded no positive results, demonstrating non-targeted mass testing as an impractical strategy to track inter-hospital transmission.","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":"13 4","pages":"1-3"},"PeriodicalIF":1.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9912269/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9326125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epidemiological profile of dengue in Champasak and Savannakhet provinces, Lao People's Democratic Republic, 2003-2020.","authors":"Sumaira Zafar,&nbsp;Hans J Overgaard,&nbsp;Tiengkham Pongvongsa,&nbsp;Nanthasane Vannavong,&nbsp;Sysavanh Phommachanh,&nbsp;Oleg Shipin,&nbsp;Joacim Rocklöv,&nbsp;Richard E Paul,&nbsp;Md Siddikur Rahman,&nbsp;Mayfong Mayxay","doi":"10.5365/wpsar.2022.13.4.932","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.4.932","url":null,"abstract":"Dengue is a public health issue in tropical south-eastern Asia responsible for significant morbidity and mortality. Information on dengue epidemiology is necessary for developing strategies to control infections effectively. In the Lao People’s Democratic Republic (Lao PDR), Champasak and Savannakhet provinces account for around 30% of the national dengue burden. In this study, the dengue epidemiological profile in these two southern provinces of Lao PDR was described by analysing seasonal and spatial dengue notification data from 2003–2020 using the long-term mean (LTM) method. Savannakhet had a higher LTM (132.0 cases/month, 95% confidence interval [Cl]: 92.2–171.7) than Champasak (113.3 cases/month, 95% CI: 86.0–140.5), with peaks in dengue notifications following the rainy season in both provinces. The highest notification rates were observed in July to September; these months were also when the LTM was most frequently exceeded. Previously, dengue notifications were largely confined to the western districts of Savannakhet and the northern districts of Champasak, but more recently, notifications have increased in the eastern districts of Savannakhet and southern districts of Champasak. While the notification rate remained high in children and young adults (5–30 years), especially among students and farmers, a shift in the age structure of dengue cases was observed, with a greater proportion of notifications now occurring in those aged over 30 years. Community-based vector control and prevention programmes are needed to restrict the spread of dengue into new geographical areas in the southern provinces of Lao PDR.","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":"13 4","pages":"1-13"},"PeriodicalIF":1.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9912291/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9326126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outbreak of <i>Ralstonia</i> bacteraemia among chronic kidney disease patients in a haemodialysis unit in the Philippines.","authors":"Denmarc R Aranas,&nbsp;Bernard A Demot,&nbsp;Thea Pamela T Cajulao","doi":"10.5365/wpsar.2022.13.4.960","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.4.960","url":null,"abstract":"<p><p><i>Ralstonia insidiosa</i> is an opportunistic pathogen considered an emerging problem among clinically vulnerable populations such as those with chronic kidney disease. This study presents three cases of <i>Ralstonia</i> bacteraemia among chronic kidney disease patients in a haemodialysis unit in Baguio City, the Philippines. Case 1 was an elderly male who experienced chills during two concurrent dialysis sessions. Case 2 was a young female who also experienced chills and dizziness during a dialysis session; as this was thought to be related to hypotension, she was admitted. Case 3 was an elderly female with known hypertension and diabetes who had been newly diagnosed with chronic kidney disease; she was brought to the emergency department hypotensive, dyspnoeic and disoriented with deranged laboratory parameters and was admitted to the intensive care unit. All three cases had blood cultures positive for <i>R. insidiosa</i> with an attack rate of 1.67%. Drug and device tracing were conducted and environmental samples collected to identify the source of infection. A sample from the faucet of the reprocessing machine in the haemodialysis unit that was positive for <i>Ralstonia spp</i>. was the source of the outbreak. Control measures were implemented and the haemodialysis unit was thoroughly cleaned. No further cases were reported, with active surveillance continuing until January 2022. Taken with previously published outbreaks, these findings suggest that medical products and devices can be contaminated with <i>Ralstonia spp</i>. and cause illness. Early identification of cases and the source of infection is required to prevent large outbreaks in this vulnerable population.</p>","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":"13 4","pages":"1-6"},"PeriodicalIF":1.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9912271/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9326124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epidemiological survey to establish thresholds for influenza among children in satellite cities of Tokyo, Japan, 2014-2018.","authors":"Ayako Matsuda,&nbsp;Kei Asayama,&nbsp;Taku Obara,&nbsp;Naoto Yagi,&nbsp;Takayoshi Ohkubo","doi":"10.5365/wpsar.2022.13.3.911","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.3.911","url":null,"abstract":"<p><strong>Objective: </strong>We described the characteristics of children reported as having influenza across five consecutive influenza seasons and investigated the usefulness of setting influenza thresholds in two satellite cities of Tokyo, Japan.</p><p><strong>Methods: </strong>An annual survey was conducted among parents of children at preschools (kindergartens and nursery schools), elementary schools and junior high schools in Toda and Warabi cities, Saitama prefecture, at the end of the 2014-2018 influenza seasons. Using the World Health Organization method, we established seasonal, high and alert thresholds.</p><p><strong>Results: </strong>There were 64 586 children included in the analysis. Over the five seasons, between 19.1% and 22% of children annually were reported as having tested positive for influenza. Influenza type A was reported as the dominant type, although type B was also reported in more than 40% of cases in the 2015 and 2017 seasons. The median period of the seasonal peak was 3 weeks in mid-January, regardless of school level. Of the five surveyed seasons, the high threshold was reached in 2014 and 2018, with no season exceeding the alert threshold.</p><p><strong>Discussion: </strong>This study provides insights into the circulation of influenza in children in the study areas of Toda and Warabi, Japan, from 2014 to 2018. Although we were able to utilize these annual surveys to calculate influenza thresholds from five consecutive seasons, the prospective usefulness of these thresholds is limited as the survey is conducted at the end of the influenza season.</p>","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":" ","pages":"1-9"},"PeriodicalIF":1.0,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9671205/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40504948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors contributing to a measles outbreak in a hard-to-reach rural village in Xaisomboun Province, \u2028Lao People's Democratic Republic.","authors":"Vannida Douangboupha,&nbsp;Philippa L Binns,&nbsp;Bouaphanh Khamphaphongphane,&nbsp;Virasack Som Oulay,&nbsp;Khanxay Sengsaiya,&nbsp;Thounchay Boupphaphanh,&nbsp;Phonepadith Xangsayarath","doi":"10.5365/wpsar.2022.13.3.874","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.3.874","url":null,"abstract":"<p><strong>Objective: </strong>An increase in measles cases was reported in the north-western of the Lao People's Democratic Republic beginning in January 2019, with outbreaks quickly spreading throughout the country. Following identification of two laboratory-confirmed cases in Xaisomboun Province, we conducted an outbreak investigation to identify factors contributing to the measles outbreak in hard-to-reach Village X.</p><p><strong>Methods: </strong>Active case-finding was undertaken at the provincial hospital and primary health care centre via a retrospective search through admission logbooks and house-to-house surveys in Village X and surrounding villages. Clinical samples were collected from suspected cases, and data were collected using a standard case investigation form. Vaccine coverage data were reviewed.</p><p><strong>Results: </strong>Of the 40 suspected measles cases with rash onset during 12 February-27 April 2019, 83% (33/40) resided in Village X and 98% (39/40) were of Hmong-Lu Mien ethnicity. Ages ranged from 22 days to 5 years, with 70% (28) aged < 24 months. Almost half of cases aged 9 to < 18 months (5/11) and 67% (8/12) of cases aged ³24 months had received a measles-containing vaccine (MCV). Reported MCV coverage in Xaisomboun for children aged < 1 year in 2017-2018 was < 50%. In 55% (22/40) of cases, case notification was delayed by ³6 days. The final case classification comprised 10% laboratory-confirmed, 20% clinically compatible, 60% epidemiologically linked and 10% non-cases.</p><p><strong>Discussion: </strong>This measles outbreak was likely associated with low immunization coverage, compounded by delays in reporting. Effective strategies are needed to address beliefs about and health literacy barriers to immunization and measles awareness. Such strategies may improve MCV coverage and early diagnosis, enabling timely public health interventions and reducing mortality and morbidity.</p>","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":" ","pages":"1-8"},"PeriodicalIF":1.0,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9583712/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40459491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A rare presentation of <i>Mycobacterium africanum</i> after two decades: a case report from Brunei Darussalam.","authors":"Abdur Rahman Rubel,&nbsp;Panduru Venkata Kishore,&nbsp;May Thu Hla Aye,&nbsp;Nor Azian Hafneh,&nbsp;Vui Heng Chong","doi":"10.5365/wpsar.2022.13.3.926","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.3.926","url":null,"abstract":"<p><p><i>Mycobacterium africanum</i> is endemic to West Africa and is rare outside this region. Most of the people infected with \u2028<i>M. africanum</i> outside Africa are migrants from affected parts of Africa. We report a rare case of pulmonary tuberculosis (TB) secondary to <i>M. africanum</i> in a man in Brunei Darussalam who had lived and worked in Guinea, West Africa for 6 years more than 20 years ago. He had been well until December 2020, when he presented with a chronic cough and was diagnosed with coinfections of <i>Klebsiella pneumoniae</i> and <i>M. africanum</i>, and newly diagnosed diabetes mellitus. This case highlights an interesting manifestation of pulmonary TB secondary to <i>M. africanum</i> in a patient whose last exposure was 20 years ago, contributed to by development of diabetes mellitus.</p>","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":"13 3","pages":"1-4"},"PeriodicalIF":1.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9831599/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10598811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Replacement of SARS-CoV-2 strains with variants carrying N501Y and L452R mutations in Japan: an epidemiological surveillance assessment.","authors":"Yusuke Kobayashi,&nbsp;Takeshi Arashiro,&nbsp;Miyako Otsuka,&nbsp;Yuuki Tsuchihashi,&nbsp;Takuri Takahashi,&nbsp;Yuzo Arima,&nbsp;Yura K Ko,&nbsp;Kanako Otani,&nbsp;Masato Yamauchi,&nbsp;Taro Kamigaki,&nbsp;Tomoko Morita-Ishihara,&nbsp;Hiromizu Takahashi,&nbsp;Sana Uchikoba,&nbsp;Michitsugu Shimatani,&nbsp;Nozomi Takeshita,&nbsp;Motoi Suzuki,&nbsp;Makoto Ohnishi","doi":"10.5365/wpsar.2022.13.3.943","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.3.943","url":null,"abstract":"<p><strong>Objective: </strong>Monitoring the prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants is important due to concerns regarding infectivity, transmissibility, immune evasion and disease severity. We evaluated the temporal and regional replacement of previous SARS-CoV-2 variants by the emergent strains, Alpha and Delta.</p><p><strong>Methods: </strong>We obtained the results of polymerase chain reaction screening tests for variants conducted in multiple commercial laboratories. Assuming that all previous strains would be replaced by one variant, the new variant detection rate was estimated by fitting a logistic growth model. We estimated the transmission advantage of each new variant over the pre-existing virus strains.</p><p><strong>Results: </strong>The variant with the N501Y mutation was first identified in the Kinki region in early February 2021, and by early May, it had replaced more than 90% of the previous strains. The variant with the L452R mutation was first detected in the Kanto-Koshin region in mid-May, and by early August, it comprised more than 90% of the circulating strains. Compared with pre-existing strains, the variant with the N501Y mutation showed transmission advantages of 48.2% and 40.3% in the Kanto-Koshin and Kinki regions, respectively, while the variant with the L452R mutation showed transmission advantages of 60.1% and 71.9%, respectively.</p><p><strong>Discussion: </strong>In Japan, Alpha and Delta variants displayed regional differences in the replacement timing and their relative transmission advantages. Our method is efficient in monitoring and estimating changes in the proportion of variant strains in a timely manner in each region.</p>","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":"13 3","pages":"1-10"},"PeriodicalIF":1.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9831602/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10604975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of Epidemic Intelligence from Open Sources for global event-based surveillance of infectious diseases for the Tokyo 2020 Olympic and Paralympic Games.","authors":"Manami Yanagawa,&nbsp;John Carlo Lorenzo,&nbsp;Munehisa Fukusumi,&nbsp;Tomoe Shimada,&nbsp;Ayu Kasamatsu,&nbsp;Masayuki Ota,&nbsp;Manami Nakashita,&nbsp;Miho Kobayashi,&nbsp;Takuya Yamagishi,&nbsp;Anita Samuel,&nbsp;Tomohiko Ukai,&nbsp;Katsuki Kurosawa,&nbsp;Miho Urakawa,&nbsp;Kensuke Takahashi,&nbsp;Keiko Tsukada,&nbsp;Akane Futami,&nbsp;Hideya Inoue,&nbsp;Shun Omori,&nbsp;Hiroko Komiya,&nbsp;Takahisa Shimada,&nbsp;Sakiko Tabata,&nbsp;Yuichiro Yahata,&nbsp;Hajime Kamiya,&nbsp;Tomimasa Sunagawa,&nbsp;Tomoya Saito,&nbsp;Viema Biaukula,&nbsp;Tatiana Metcalf,&nbsp;Dina Saulo,&nbsp;Tamano Matsui,&nbsp;Babatunde Olowokure","doi":"10.5365/wpsar.2022.13.3.959","DOIUrl":"https://doi.org/10.5365/wpsar.2022.13.3.959","url":null,"abstract":"The establishment of enhanced surveillance systems for mass gatherings to detect infectious diseases that may be imported during an event is recommended. The World Health Organization Regional Office for the Western Pacific contributed to enhanced event-based surveillance for the Tokyo 2020 Olympic and Paralympic Games (the Games) by using Epidemic Intelligence from Open Sources (EIOS) to detect potential imported diseases and report them to the National Institute of Infectious Diseases (NIID), Japan. Daily screening of media articles on global infectious diseases was conducted using EIOS, which were systematically assessed to determine the likelihood of disease importation, spread and significant impact to Japan during the Games. Over 81 days of surveillance, 103 830 articles were screened by EIOS, of which 5441 (5.2%) met the selection criteria for initial assessment, with 587 (0.6%) assessed as signals and reported to NIID. None of the signals were considered to pose a significant risk to the Games based on three risk assessment criteria. While EIOS successfully captured media articles on infectious diseases with a likelihood of importation to and spread in Japan, a significant manual effort was required to assess the articles for duplicates and against the risk assessment criteria. Continued improvement of artificial intelligence is recommended to reduce this effort.","PeriodicalId":31512,"journal":{"name":"Western Pacific Surveillance and Response","volume":"13 3","pages":"1-7"},"PeriodicalIF":1.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9831600/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10828177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}