scholarly journals Role of Aedes aegypti and Aedes albopictus during the 2011 dengue fever epidemics in Hanoi, Vietnam

2015 ◽  
Vol 8 (7) ◽  
pp. 543-548 ◽  
Author(s):  
Pham Thi Kim Lien ◽  
Vu Trong Duoc ◽  
Laurent Gavotte ◽  
Emmanuel Cornillot ◽  
Phan Thi Nga ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Dengue Fever ◽  
Aedes Albopictus

scholarly journals Penentuan Status Maya Index Larva Aedes Sp.

2020 ◽  
Vol 2 (1) ◽  
pp. 15-24
Author(s):  
Fatimah Azzahra ◽  
Emantis Rosa ◽  
Muhammad Galih Irianto ◽  
Hanna Mutiara
Keyword(s):  
Aedes Aegypti ◽  
Dengue Fever ◽  
Aedes Albopictus ◽  
Risk Index ◽  
Water Reservoir ◽  
Breeding Site ◽  
The Status ◽  
Mosquito Breeding ◽  
Breeding Place

Demam berdarah atau DBD adalah penyakit yang ditularkan melalui vektor nyamuk Aedes aegypti dan Aedes albopictus. Maya Index dapat digunakan untukmengidentifikasi suatu area yang memiliki risiko tinggi sebagai tempat perkembangbiakan atau breeding site nyamuk Aedes sp. didasarkan pada status kebersihan lingkungan dan ketersediaan tempat–tempat yang berpotensi sebagai tempat perkembangbiakan nyamuk. Tujuan penelitian ini adalah untuk mengetahui status Maya Index, mengidentifikasi tipe tempat penampungan air atau TPA, dan mengidentifikasi jenis larva Aedes sp. yang ditemukandi kecamatan Sukabumi yang dilakukan pada bulan November-Desember 2019. Penelitian ini dilakukan dengan cara survey ke 100 rumah masyarakat di 3 kelurahan, yaitu kelurahan Nusantara, kelurahan Sukabumi dan Kelurahan Sukabumi Indah. Analisis Maya Index menggunakan Breeding Risk Index atau BRI and Hygiene Risk Indexatau HRI. Hasil dari penelitian ini menunjukkan bahwa TPA terkontrol yang paling berpotensi untuk perkembangbiakan nyamuk adalah tempat penampungan air pada dispenser, sedangan TPA tidak terkontrol yang paling berpotensi untuk perkembangbiakan nyamuk adalah kaleng bekas. Ada 2 tipe dari larva nyamuk yang ditemukan, yaitu Aedes aegypti dengan persentase 73.5% dan Aedes albopictus dengan persentase 26.5%. Status Maya Index dikategorikan kepada kategori sedang yang ditentukan bedasarkan kategoriBreeding Risk Index dan Hygiene risk index. Namun demikian, hal itu tidak berarti daerah tersebut bebas dari kasus DBD. Pengaturan dari masyarakat sangat dibutuhkan untuk mengeradikasi TPA yang memiliki potensial tinggi sebagai tempat perkembangbiakan vektor DBD.  Kata Kunci: demam berdarah, larva aedes sp., maya index  DETERMINATION THE MAYA INDEX STATUS OF AEDES SP. LARVAE                                                                                         ABSTRACT Dengue Fever is a disease that is transmitted through the Aedes aegypti and Aedes albopictus mosquito vectors. Maya Index can be used to identify an area that has a high risk of breeding site of the Aedes sp. Mosquito based on the status of environmental hygiene and the availability of potential places of mosquito breeding. The aim of this study was to determine the type of landfill which has the potential as a breeding ground for mosquitoes, to find out the larvae found in various landfill sites, and to know the Maya index status in Sukabumi District which was carried out in November-December 2019. This research conducted by a direct survey of 100 houses in 3 villages in Sukabumi District, namely Nusantara, Sekabumi, and Sukabumi Indah. Data analysis to determine Maya Index uses the Breeding Risk Index or BRI and Hygiene risk index or HRI. The results indicated that the type of controlled water reservoir that had the most potential as a breeding place for mosquitoes was a water reservoir of dispenser, while the type of water reservoir that was not controlled which had the potential as a place for mosquito breeding was a used cans. There were 2 types of larvae found, namely, Aedes aegypti larvae with a percentage of 73.5% and Aedes albopictus larvae with a percentage of 26.5%. The Maya index status detected there, was a medium category, which obtained from the Breeding Risk Index category and Hygiene Risk Index category. Besides, it did not mean that the area has been free from dengue cases. The role of the community is still very much needed in eradicating landfills which has the potential as a breeding place for dengue mosquitoes vector.  Keyword: dengue fever, larva of aedes sp., maya index

scholarly journals Aedes albopictus (Skuse, 1894) infected with the American-Asian genotype of dengue type 2 virus in Medellín suggests its possible role as vector of dengue fever in Colombia

Biomédica ◽  
2017 ◽  
Vol 37 ◽  
pp. 135 ◽  
Author(s):  
Andrés Gómez-Palacio ◽  
Juan Suaza-Vasco ◽  
Sandra Castaño ◽  
Omar Triana ◽  
Sandra Uribe
Keyword(s):  
Aedes Aegypti ◽  
Dengue Fever ◽  
Aedes Albopictus ◽  
Distribución Geográfica ◽  
Dengue Type 2 Virus

Introducción. Aedes aegypti y Ae. albopictus son reconocidos vectores de arbovirus como los del dengue, la fiebre amarilla, el chikungunya y el Zika, en regiones tropicales y subtropicales del mundo. En Colombia, la distribución geográfica de Ae. albopictus ha sufrido un incremento y hoy incluye ciudades como Cali y Medellín. Hasta ahora, sin embargo, no se ha recabado información concluyente sobre su infección viral y su capacidad de transmisión a los humanos.Objetivo. Determinar la infección natural por dengue en ejemplares de Ae. albopictus recolectados en un área urbana de Medellín.Materiales y métodos. Se recolectaron individuos de Ae. albopictus en el campus de la Universidad Nacional de Colombia, sede Medellín. Se confirmó su clasificación taxonómica mediante el análisis del gen citocromo oxidasa I (COI), y se extrajo el ARN total para la identificación del virus del dengue y de los respectivos serotipos. La presencia del genotipo DENV se infirió mediante el análisis del gen NS3.Resultados. El análisis del COI corroboró el estatus taxonómico de Ae. albopictus. Uno de los mosquitos procesados fue positivo para DENV-2 y el análisis del NS3 mostró una gran similitud con el genotipo asiático-americano.Conclusión. Se reporta la infección con DENV-2 en Ae. albopictus en Medellín, Colombia. La presencia del genotipo asiático-americano en una zona urbana sugiere su posible circulación entre humanos y en Ae. albopictus, lo cual alerta sobre su eventual papel en la transmisión del DENV-2, y sobre la necesidad de incluir esta especie en la vigilancia entomológica en Colombia.

scholarly journals PERAN GEN STRUKTURAL, GEN NON-STRUKTURAL, DAN UNTRANSLATED REGION DALAM PERAKITAN VIRUS DENGUE

2015 ◽  
Vol 7 (2) ◽  
Author(s):  
Meiranty C. Pangerapan ◽  
Beivy J. Kolondam
Keyword(s):  
Aedes Aegypti ◽  
Dengue Virus ◽  
Dengue Fever ◽  
Aedes Albopictus ◽  
Untranslated Region ◽  
Rna Virus ◽  
Virus Genome ◽  
Interferon Response ◽  
Endoplasmic Reticulum Membrane ◽  
Structural Genes

Abstract: Dengue virus is a single-stranded RNA virus that belongs to Flaviviridae family. This virus causes dengue fever which is transmitted by Aedes aegypti dan Aedes albopictus. There are four serotypes of dengue virus; all of them can cause dengue fever. Understanding the genomics of dengue virus is important for research and diagnostics. The genome of dengue virus is 11 kilo-base long. It consists of 5’-untranslated region (5’-UTR), three structural genes (coding capsid protein, pre-membrane/membrane, and envelope), seven non-structural genes (coding NS1, NS2A, NS2B, NS3, NS4A, NS4B, and NS5 proteins) and 3’-UTR. Non-structural genes are encoding proteins of viral RNA replication, interferon response, viral assembly and secretion, endoplasmic reticulum membrane invagination induction, immune-mediator induction, and RNA 5’-caping.Keywords: dengue virus, genome, structural genes, non-structural genes, untranslated region.Abstrak: Virus dengue merupakan virus RNA beruntai tunggal yang termasuk dalam famili Flaviviridae. Virus ini adalah penyebab penyakit demam berdarah dengue yang ditransmisikan melalui nyamuk Aedes aegypti dan Aedes albopictus. Ada empat serotipe virus dengue yang telah dikenal secara luas yang ada semuanya dapat menimbulkan penyakit demam berdarah. Pemahaman tentang genomik virus dengue sangat penting untuk pengembangan penelitian dan juga untuk keperluan diagnostik. Genom virus dengue memiliki panjang 11 kilo basa. Genomnya tersusun atas 5’-untranslated region (5’-UTR), tiga gen struktural (mengodekan protein kapsid, premembran/membran dan amplop), tujuh gen non-struktural (mengodekan protein NS1, NS2A, NS2B, NS3, NS4A, NS4B dan NS5) dan 3’-UTR. Gen-gen non-struktural mengodekan protein untuk replikasi RNA virus, respon interferon, perakitan, sekresi partikel virus, menginduksi invaginasi membran retikulum endoplasma, induksi imunomediator dan penambahan tudung pada ujung 5’ RNA.Kata kunci: virus dengue, genom, gen struktural, gen non-struktural, untranslated region

Key breeding sites of Aedes mosquitoes in Huaylau village, Pakse city, Champasack province, Lao People Democratic Republic 2019

2021 ◽  
Vol 05 (02) ◽  
pp. 52-61
Author(s):  
Thi Thanh Huong Le ◽  
◽  
Quynh Nguyen ◽  
Saenthavisouk Vanhnasack ◽  
Sinh Nam Vu
Keyword(s):  
Aedes Aegypti ◽  
Dengue Fever ◽  
Aedes Albopictus ◽  
Statistical Significance ◽  
P Value ◽  
Epidemic Threshold ◽  
Cross Sectional ◽  
Breeding Sites ◽  
Aedes Mosquitoes ◽  
The Village

Objectives: The elimination of key breeding sites of dengue vector is applied worldwide to control the vector density under the critical epidemic threshold. This study aimed to identify key breeding sites of Aedes mosquitos and associated factors in Huaylau village, Pakse city, Champasack province in Laos in 2019. Methods: This was a cross-sectional study, combining of immature stage survey of Aedes mosquitoes in all water and discarded containers and the community’s knowledge and practices on the prevention of dengue fever in all 240 households in Huaylau village. Multivariate logistic regression was applied to identify factors associated with the absence of Aedes larvae and pupae in the village. Statistical significance was set at a p-value less than 0.05. Results: Among the 720 water and discarded containers surveyed, the study found 654 Aedes larvae and pupae; of which 94.6% were immature Aedes aegypti. Key breeding sites of Aedes aegypti included water jars (34.2%), plastic drums (30.7%), tanks < 500 litter (14.7%), and discarded containers (12.6%), while that of all Aedes albopictus was discarded containers. The community’s better practices on the prevention of dengue fever contributed to the increased odds of the absence of Aedes larvae ad pupae by 1.612 (95%CI: 1.218-2.134, p<0.01), and the cleanliness of the house were associated with the increased odds of 4.072 of the absent Aedes larvae and pupae in the participated households (95%CI: 1.589-10.434, p<0.01). Conclusions: Aedes aegypti mosquitoes in the Huaylau village laid their eggs in various breeding sites, including water containers and discarded containers while discarded containers were the only key breeding site of Aedes albopictus. Better practices on dengue prevention and better hygiene conditions of the houses contributed to the absence of Aedes larvae and pupae. Special attention should be paid to the clearance of all discarded containers and education of the community people to cover water containers in the village. Keywords: key breeding sites, Aedes, mosquito, pupae, larvae, Champasack province, Lao PDR

Risk of Dengue Spread from the Philippines through International Air Travel

2015 ◽  
Vol 2501 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Lauren M. Gardner ◽  
Sahotra Sarkar
Keyword(s):  
Aedes Aegypti ◽  
Dengue Fever ◽  
Aedes Albopictus ◽  
Structural Damage ◽  
The Philippines ◽  
Control Measures ◽  
Monitoring And Control ◽  
Distribution Models ◽  
Breeding Grounds ◽  
Traffic Volumes

Epidemics of dengue fever occur every 3 to 4 years in the Philippines. The risk of a dengue fever outbreak in the Philippines has been heightened since Typhoon Haiyan struck the region in November 2013 because recovery efforts have been slow to progress. The structural damage caused by the typhoon resulted in an abundance of standing water, which can serve as mosquito breeding grounds. Should an outbreak of dengue occur, infected travelers departing the Philippines pose a risk because they may introduce the dengue virus into local vector populations (of Aedes aegypti and Aedes albopictus) at their destinations. This study quantifies the risk posed by potentially infected travelers departing the Philippines by using a network model that incorporates predictive species distribution models, demographic features of destination areas, and air traffic volumes. The analysis reveals that a majority of travelers departing Philippine airports deplane in regions suitable for harboring Aedes aegypti or Aedes albopictus; this factor increases the likelihood of further spread of the disease if an outbreak were to occur. Because it is impractical to implement all possible monitoring and control measures at all locations connected to the Philippines, this analysis ranks the set of candidates and thus allows surveillance resources to be optimally deployed.

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