Role of Aedes aegypti (Linnaeus) and Aedes albopictus (Skuse) in local dengue epidemics in Taiwan

Tsai, Pui-Jen; Teng, Hwa-Jen

doi:10.1186/s12879-016-2002-4

Cited by 21 publications

(12 citation statements)

References 77 publications

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“…aegypti near households, an observation furtherly supporting that Ae. aegypti might play the most important role in dengue virus transmission in southern Taiwan [ 79 , 80 ].…”

Section: Discussionmentioning

confidence: 99%

Increased Adult Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Abundance in a Dengue Transmission Hotspot, Compared to a Coldspot, within Kaohsiung City, Taiwan

Chaves

Tsai

et al. 2018

Insects

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The assumption that vector abundance differences might drive spatial and temporal heterogeneities in vector-borne disease transmission is common, though data supporting it is scarce. Here, we present data from two common mosquito species Aedes aegypti (Linnaeus) and Culex quinquefasciatus Say, biweekly sampled as adults, from March 2016 through December 2017, with BG-sentinel traps in two neighboring districts of Kaohsiung City (KC), Taiwan. One district has historically been a dengue transmission hotspot (Sanmin), and the other a coldspot (Nanzih). We collected a total 41,027 mosquitoes, and we found that average mosquito abundance (mean ± S.D.) was higher in Sanmin (Ae. aegypti: 9.03 ± 1.46; Cx. quinquefasciatus: 142.57 ± 14.38) than Nanzih (Ae. aegypti: 6.21 ± 0.47; Cx. quinquefasciatus: 63.37 ± 8.71) during the study period. In both districts, Ae. aegypti and Cx. quinquefasciatus population dynamics were sensitive to changes in temperature, the most platykurtic environmental variable at KC during the study period, a pattern predicted by Schmalhausen’s law, which states that organisms are more sensitive to small changes in environmental variables whose average value is more uncertain than its extremes. Our results also suggest that differences in Ae. aegypti abundance might be responsible for spatial differences in dengue transmission at KC. Our comparative approach, where we also observed a significant increment in the abundance of Cx. quinquefasciatus in the dengue transmission hotspot, suggests this area might be more likely to experience outbreaks of other vector borne diseases and should become a primary focus for vector surveillance and control.

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“…aegypti near households, an observation furtherly supporting that Ae. aegypti might play the most important role in dengue virus transmission in southern Taiwan [ 79 , 80 ].…”

Section: Discussionmentioning

confidence: 99%

Increased Adult Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Abundance in a Dengue Transmission Hotspot, Compared to a Coldspot, within Kaohsiung City, Taiwan

Chaves

Tsai

et al. 2018

Insects

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“…Compared with the county, town, village, or district scale used as basic geographic units in previous spatial epidemiology studies, the instability of calculating or processing research objects is subject to disturbances caused by the irregularity and nonconformity of constantly changing administrative divisions [ 4 , 5 , 22 , 25 ]. This phenomenon can be efficiently avoided by using regular spatial grid analysis [ 26 ].…”

Section: Methodsmentioning

confidence: 99%

Exploring Determinants of Spatial Variations in the Dengue Fever Epidemic Using Geographically Weighted Regression Model: A Case Study in the Joint Guangzhou-Foshan Area, China, 2014

Ren

Zheng

et al. 2017

IJERPH

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Dengue fever (DF) is a common and rapidly spreading vector-borne viral disease in tropical and subtropical regions. In recent years, this imported disease has posed an increasing threat to public health in China, especially in many southern cities. Although the severity of DF outbreaks in these cities is generally associated with known risk factors at various administrative levels, spatial heterogeneities of these associations remain little understood on a finer scale. In this study, the neighboring Guangzhou and Foshan (GF) cities were considered as a joint area for characterizing the spatial variations in the 2014 DF epidemic at various grid levels from 1 × 1 km2 to 6 × 6 km2. On an appropriate scale, geographically weighted regression (GWR) models were employed to interpret the influences of socioeconomic and environmental factors on this epidemic across the GF area. DF transmissions in Guangzhou and Foshan cities presented synchronous temporal changes and spatial expansions during the main epidemic months. Across the GF area, this epidemic was obviously spatially featured at various grid levels, especially on the 2 × 2 km2 scale. Its spatial variations were relatively sufficiently explained by population size, road density, and economic status integrated in the GWR model with the lowest Akaike Information Criterion (AICc = 5227.97) and highest adjusted R square (0.732) values. These results indicated that these three socioeconomic factors acted as geographical determinants of spatial variability of the 2014 DF epidemic across the joint GF area, although some other potential factors should be added to improve the explaining the spatial variations in the central zones. This work improves our understanding of the effects of socioeconomic conditions on the spatial variations in this epidemic and helps local hygienic authorities to make targeted joint interventions for preventing and controlling this epidemic across the GF area.

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“…aegypti. 7,8 Bertambahnya populasi nyamuk karena tersedia tempat-tempat yang berpotensi sebagai perkembangbiakan. Berdasarkan penelitian yang pernah dilakukan oleh Sunaryo dan Espinosa, tempat perkembangbiakan nyamuk Ae.…”

Section: Pendahuluanunclassified

Distribusi dan Karakteristik Tempat Perkembangbiakan Aedes aegypti serta Perilaku Masyarakat di Daerah Endemis Demam Berdarah Dengue di Salatiga

Setiyaningsih

Pujiyanti²,

Hidajat³

et al. 2018

aspirator

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Human behavior in form of less awareness about the environment will cause the increase of mosquito breeding places and lead to increase the dengue vector's population rising. This research's purpose was to describe distribution and characteristics of the dengue vector's breeding place and people behavior in dengue endemic areas in Salatiga. The data collection was done by monitoring larvae and pupa on water container and interviewing community about related behavior. Results showed that larvae tend to be found in water storage containers, household appliances and open unused goods which was located inside the house. Based on the analysis, there is no significant difference between the indoor and outdoor container, the container is closed or open, and sprinkled with temephos or not. Significant differences were found in different types of containers, containers with fish and drained in the last one week. People in DHF endemic area tend to conduct 3M (Menguras/drain and Menutup/close the lid of Water Reservoirs and Mengubur/bury unused container that have potential as breeding places) and do not use fish nor larvacide for dengue vector control. Based on the result of the research, it is necessary to evaluate the community behavior in closing container and also evaluate the resistance of DHF vector mosquito to temephos.Abstrak. Perilaku manusia yang kurang sadar terhadap lingkungan akan menyebabkan bertambahnya tempat perkembangbiakan nyamuk sehingga memperbesar peluang peningkatan populasi vektor DBD. Tujuan penelitian adalah mengetahui distribusi dan karakteristik tempat perkembangbiakan vektor DBD dan perilaku masyarakat di daerah endemis DBD di Salatiga. Pengumpulan data dilakukan dengan pengamatan jentik dan pupa pada kontainer dan wawancara perilaku masyarakat. Hasil survei menunjukkan bahwa jentik nyamuk cenderung ditemukan pada kontainer penampungan air, peralatan rumah tangga dan barang bekas terbuka yang terletak di dalam rumah. Berdasarkan analisis tidak ada perbedaan yang bermakna pada keberadaan jentik dan pupa nyamuk dengan letak kontainer, penutup kontainer, dan kontainer yang ditaburi temephos maupun tidak. Perbedaan keberadaan jentik dan pupa nyamuk secara signifikan ditemukan pada variabel jenis kontainer, kontainer dengan ikan dan kontainer yang dikuras satu minggu terakhir. Masyarakat di daerah endemis DBD cenderung melakukan kegiatan 3M dan tidak menggunakan ikan maupun larvasida dalam pengendalian vektor DBD. Berdasarkan hasil penelitian perlu dilakukan evaluasi terhadap perilaku masyarakat dalam menutup container dan resistensi nyamuk vektor DBD terhadap temephos.

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Role of Aedes aegypti (Linnaeus) and Aedes albopictus (Skuse) in local dengue epidemics in Taiwan

Cited by 21 publications

References 77 publications

Increased Adult Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Abundance in a Dengue Transmission Hotspot, Compared to a Coldspot, within Kaohsiung City, Taiwan

Increased Adult Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Abundance in a Dengue Transmission Hotspot, Compared to a Coldspot, within Kaohsiung City, Taiwan

Exploring Determinants of Spatial Variations in the Dengue Fever Epidemic Using Geographically Weighted Regression Model: A Case Study in the Joint Guangzhou-Foshan Area, China, 2014

Distribusi dan Karakteristik Tempat Perkembangbiakan Aedes aegypti serta Perilaku Masyarakat di Daerah Endemis Demam Berdarah Dengue di Salatiga

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