Biting Density and Distribution of &lt;i&gt;Aedes albopictus&lt;/i&gt; during the September 2014 Outbreak of Dengue Fever in Yoyogi Park and the Vicinity of Tokyo Metropolis, Japan

Tsuda, Yuichi; Maekawa, Yoshihide; Ogawa, Kohei; Itokawa, Kentaro; Komagata, Osamu; Sasaki, Toshinori; Isawa, Haruhiko; Tomita, Takashi; Sawabe, Kyoko

doi:10.7883/yoken.jjid.2014.576

Cited by 56 publications

(50 citation statements)

References 21 publications

(20 reference statements)

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“…During the past 2 years (2014-2015) outbreaks of DF have also been reported in our neighboring countries such as China, 12 Japan, 18 Malaysia, 19 and Singapore. 19 This reminds us that we ought to pay more attention to this infectious disease as it is becoming an issue in southeastern Asian countries.…”

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confidence: 97%

Severe Dengue Fever Outbreak in Taiwan

Wang

Chang

et al. 2016

The American Society of Tropical Medicine and Hygiene

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Abstract. Dengue fever (DF) is a vector-borne disease caused by dengue viruses (DENVs). Epidemic dengue occurs intermittently in Taiwan. In 2014, Taiwan experienced its largest DF outbreak. There were 15,732 DF cases reported. There were a total of 136 dengue hemorrhagic fever (DHF) cases, of which 20 resulted in death. Most DF cases were reported in southern Taiwan. A total of 15,043 (96%) cases were from Kaohsiung, a modern city in southern Taiwan. This report reviews DF epidemics in Taiwan during [2005][2006][2007][2008][2009][2010][2011][2012][2013][2014]. The correlation between DF and DHF along with temperature and precipitation were conjointly examined. We conclude that most dengue epidemics in Taiwan resulted from imported DF cases. Results indicate three main factors that may have been associated with this DF outbreak in Kaohsiung: an underground pipeline explosion combined with subsequent rainfall and higher temperature. These factors may have enhanced mosquito breeding activity, facilitating DENV transmission.Dengue fever (DF) is caused by dengue viruses (DENVs) infection. It is a mosquito-borne viral disease in tropical and subtropical regions of the world.

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confidence: 97%

Severe Dengue Fever Outbreak in Taiwan

Wang

Chang

et al. 2016

The American Society of Tropical Medicine and Hygiene

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“…Tsuda et al [14] collected A. albopictus mosquitoes from Yoyogi Park on 4 and 5 September, 2014, and estimated that the overall mean density of biting mosquitoes was 7.13/person/8 min. A previous investigation of the arrival patterns of A. albopictus on a person during 30-min collection intervals showed that 56 and 68 % of the total female mosquitoes were collected during the first 5 and 10 min of the mosquito collection, respectively [15].…”

Section: Resultsmentioning

confidence: 99%

Estimation of reproduction number and probable vector density of the first autochthonous dengue outbreak in Japan in the last 70 years

Furuya

2015

Environ Health Prev Med

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Both estimated reproduction number and vector density per person at the onset of the epidemic were higher than previously reported values. These results indicate the potential for dengue outbreaks in places with elevated vector density per person, even in dengue non-endemic countries. To investigate the cause of this outbreak, further studies will be needed, including assessments of social, behavioral, and environmental factors that may have contributed to this epidemic by altering host and vector conditions in the park.

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“…albopictus density and human biting within a city and across land-use types [21,39,56]. More field data and behavioral evaluation are needed to refine model assumptions and parameters regarding when and where mosquito density and percent human feeding is likely to facilitate onward human transmission.…”

Section: Discussionmentioning

confidence: 99%

Defining the risk of Zika and chikungunya virus transmission in human population centers of the eastern United States

Manore

Ostfeld

Agusto

et al. 2016

Preprint

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The recent spread of mosquito-transmitted viruses and associated disease to the Americas motivates a new, data-driven evaluation of risk in temperate population centers. Temperate regions are generally expected to pose low risk for significant mosquito-borne disease; however, the spread of the Asian tiger mosquito (Aedes albopictus) across densely populated urban areas has established a new landscape of risk. We use a model informed by field data to assess the conditions likely to facilitate local transmission of chikungunya and Zika viruses from an infected traveler to Ae. albopictus and then to other humans in USA cities with variable human densities and seasonality. Mosquito-borne disease occurs when specific combinations of conditions maximize virus-to-mosquito and mosquito-to-human contact rates. We develop a mathematical model that captures the epidemiology and is informed by current data on vector ecology from urban sites. The model demonstrates that under specific but realistic conditions, fifty-percent of introductions by infectious travelers to a high human, high mosquito density city could initiate local transmission and 10% of the introductions could result in 100 or more people infected. Despite the propensity for Ae. albopictus to bite non-human vertebrates, we also demonstrate that local virus transmission and human outbreaks may occur when vectors feed from humans even just 40% of the time. Inclusion of human behavioral changes and mitigations were not incorporated into the models and would likely reduce predicted infections. This work demonstrates how a conditional series of non-average events can result in local arbovirus transmission and outbreaks of human disease, even in temperate cities.

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Biting Density and Distribution of <i>Aedes albopictus</i> during the September 2014 Outbreak of Dengue Fever in Yoyogi Park and the Vicinity of Tokyo Metropolis, Japan

Cited by 56 publications

References 21 publications

Severe Dengue Fever Outbreak in Taiwan

Severe Dengue Fever Outbreak in Taiwan

Estimation of reproduction number and probable vector density of the first autochthonous dengue outbreak in Japan in the last 70 years

Defining the risk of Zika and chikungunya virus transmission in human population centers of the eastern United States

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