Travel-Associated Dengue Cases — United States, 2010–2021

Wong, Joshua M.; Rivera, Aidsa; Volkman, Hannah R.; Torres-Velasquez, Brenda; Rodriguez, Dania M.; Paz-Bailey, Gabriela; Adams, Laura E.

doi:10.15585/mmwr.mm7230a3

Cited by 10 publications

(5 citation statements)

References 7 publications

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“…We found that Asia and Oceania were the most common regions of acquisition, contrasting with the USA, where cases are primarily imported from the Americas. 24 , 25 Similarly, we saw very few cases from Africa, which tends to contribute a higher proportion of imported cases to both the USA and Europe. 22 , 24 These findings highlight the value of Australian dengue surveillance in providing sentinel information on circulating DENV serotypes and outbreaks in acquisition countries, especially in Asia and Oceania.…”

Section: Discussionmentioning

confidence: 71%

The epidemiology of imported and locally acquired dengue in Australia, 2012–2022

Sohail,

Anders,

McGuinness

et al. 2024

Journal of Travel Medicine

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Background Dengue is the most important arboviral disease globally, and poses ongoing challenges for control including in non-endemic countries with competent mosquito vectors at risk of local transmission through imported cases. We examined recent epidemiological trends in imported and locally-acquired dengue in Australia, where the Wolbachia mosquito population replacement method was implemented throughout dengue-prone areas of northern Queensland between 2011–2019. Methods We analysed dengue cases reported to the Australian National Notifiable Disease Surveillance System (NNDSS) between January 2012 and December 2022, and Australian traveller movement data. Results Between 2012 and 2022, 13 343 dengue cases were reported in Australia (median 1466 annual cases); 12 568 cases (94.2%) were imported, 584 (4.4%) were locally acquired and 191 (1.4%) had no origin recorded. Locally-acquired cases decreased from a peak in 2013 (n = 236) to zero in 2021–2022. Annual incidence of imported dengue ranged from 8·29/100000 (n = 917 cases) to 22·10/100000 (n = 2203) annual traveller movements between 2012 and 2019, decreased in 2020 (6·74/100000 traveller movements; n = 191) and 2021 (3·32/100000 traveller movements; n = 10) during COVID-19-related border closures, then rose to 34·79/100000 traveller movements (n = 504) in 2022. Imported cases were primarily acquired in Southeast Asia (n = 9323; 74%), Southern and Central Asia (n = 1555; 12%) and Oceania (n = 1341; 11%). Indonesia (n = 5778; 46%) and Thailand (n = 1483; 12%) were top acquisition countries. DENV-2 (n = 2147; 42%) and DENV-1 (n = 1526; 30%) were predominant serotypes. Conclusion Our analysis highlights Australia’s successful control of locally-acquired dengue with Wolbachia. Imported dengue trends reflect both Australian travel destinations and patterns and local epidemiology in endemic countries. Funding AS is supported by a National Health and Medical Research (NHMRC) Postgraduate Scholarship (grant number 2002792), SLM by NHMRC Investigator Grants (grant number 2017229), KL by a NHMRC Senior Research Fellowship (grant number 1155005), and KLA by the Welcome Trust (grant number 224459/Z/21/Z).

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Section: Discussionmentioning

confidence: 71%

The epidemiology of imported and locally acquired dengue in Australia, 2012–2022

Sohail,

Anders,

McGuinness

et al. 2024

Journal of Travel Medicine

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“…Furthermore, there has been a significant increase in international travel and trade, which has resulted in infected individuals transporting the virus across national boundaries. It has led to the emergence of novel viral strains that dramatically facilitated the swift dissemination of the disease 25 . The adaptability of the dengue virus, characterized by the presence of four unique serotypes, poses significant challenges to control 26,27 .…”

Section: Possible Reasons Behind the Frequent Dengue Outbreaksmentioning

confidence: 99%

“…It has led to the emergence of novel viral strains that dramatically facilitated the swift dissemination of the disease. 25 The adaptability of the dengue virus, characterized by the presence of four unique serotypes, poses significant challenges to control. 26 , 27 This is because patients who have previously recovered from one serotype remain vulnerable to infection by the other serotypes, which may result in more severe manifestations of the disease during subsequent outbreaks.…”

Section: Possible Reasons Behind the Frequent Dengue Outbreaksmentioning

confidence: 99%

Upsurge of dengue outbreaks in several WHO regions: Public awareness, vector control activities, and international collaborations are key to prevent spread

Sarker,

Roknuzzaman,

Haque

et al. 2024

Health Science Reports

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BackgroundDengue, the world's fastest‐growing vector‐borne disease, has skyrocketed in the 21st century. Dengue has harmed human health since its first known cases among Spanish soldiers in the Philippines to its 21st‐century outbreaks in Southeast Asia, the Pacific, and the Americas. In light of the current circumstances, it is imperative to investigate its origin and prevalence, enabling the implementation of effective interventions to curb the upsurge.MethodsOur study examines the history of dengue outbreaks, and evolving impact on public health, aiming to offer valuable insights for a more resilient public health response worldwide. In this comprehensive review, we incorporated data from renowned databases such as PubMed, Google Scholar, and Scopus to provide a thorough analysis of dengue outbreaks.ResultsRecent dengue outbreaks are associated with rapid urbanization, international travel, climatic change, and socioeconomic factors. Rapid urbanization and poor urban design and sanitation have created mosquito breeding places for dengue vectors. Also, international travel and trade have spread the pathogen. Climate change in the past two decades has favored mosquito habitats and outbreaks. Socioeconomic differences have also amplified the impact of dengue outbreaks on vulnerable communities. Dengue mitigation requires vector control, community engagement, healthcare strengthening, and international cooperation.ConclusionClimate change adaptation and urban planning are crucial. Although problems remain, a comprehensive vector control and community involvement plan may reduce dengue epidemics and improve public health in our interconnected world.

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“…United States of America reported a 168% upsurge in travel-associated dengue cases in 2019 compared to the annual average during 2010-2018 and 2020-2021. Travel related dengue cases were associated with travel to Caribbean (39%), Asia (27%) and North America (14%) with most cases occurring during July-November [34]. Travel-associated dengue imposes significant implications for public health practice.…”

Section: Dengue Infections In Travellersmentioning

confidence: 99%

Proceedings of the 6th Asia Dengue Summit, June 2023

Srisawat,

Gubler,

Pangestu

et al. 2024

PLoS Negl Trop Dis

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The 6th Asia Dengue Summit (ADS) themed “Road Map to Zero Dengue Death” was held in Thailand from 15th–16th June 2023. The summit was hosted by Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand in conjunction with Queen Saovabha Memorial Institute, The Thai Red Cross Society; Faculty of Tropical Medicine, Mahidol University; and the Ministry of Public Health. The 6th ADS was convened by Asia Dengue Voice and Action (ADVA); Global Dengue and Aedes Transmitted Diseases Consortium (GDAC); Southeast Asian Ministers of Education Tropical Medicine and Public Health Network (SEAMEO TROPMED); Fondation Mérieux (FMx) and the International Society for Neglected Tropical Diseases (ISNTD). Dengue experts from academia and research, and representatives from the Ministries of Health, Regional and Global World Health Organization (WHO) and International Vaccine Institute (IVI) participated in the three-day summit. With more than 51 speakers and 451 delegates from over 24 countries, 10 symposiums, and 2 full days, the 6th ADS highlighted the growing threat of dengue and its antigenic evolution, flagged the urgent need to overcome vaccine hesitancy and misinformation crisis, and focused on dengue control policies, newer diagnostics, therapeutics and vaccines, travel-associated dengue, and strategies to improve community involvement.

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Travel-Associated Dengue Cases — United States, 2010–2021

Cited by 10 publications

References 7 publications

The epidemiology of imported and locally acquired dengue in Australia, 2012–2022

The epidemiology of imported and locally acquired dengue in Australia, 2012–2022

Upsurge of dengue outbreaks in several WHO regions: Public awareness, vector control activities, and international collaborations are key to prevent spread

Proceedings of the 6th Asia Dengue Summit, June 2023

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