scholarly journals Larvicidal activity of phytoextracts against dengue fever vector, Aedes aegypti - A review

2018 ◽  
Vol 5 (4) ◽  
pp. 167-174 ◽  
Author(s):  
Kalarikkal Venugopalan Lakshmi ◽  
Ambalaparambil Vasu Sudhikumar ◽  
Embalil Mathachan Aneesh
Keyword(s):  
Life Cycle ◽  
Aedes Aegypti ◽  
Vector Control ◽  
Dengue Fever ◽  
Inhibitory Action ◽  
Control Measures ◽  
Mosquito Vectors ◽  
Chemical Insecticide ◽  
Insecticide Application ◽  
Efficient Control

Since Aedes aegypti is considered as the major vector of dengue fever, development of strategies to accomplish improved vector control without much interference in the environment composition are more common. As phytochemicals are now in the run for achieving this goal, this review is a humble attempt to recognize the plant species and their larvicidal efficacy with their inhibitory action on the life cycle of the species of interest, that has been documented through various studies conducted till date. Here we also discuss the synergistic impact of a number of phytoextracts which will provide more efficient control measures for mosquito vectors. All these studies are an exploration for a risk-free vector control tactic to replace the current chemical insecticide application for the betterment of our nature.

Environmental Vector Control Practices among Households of Patients with Dengue Fever during the Epidemic of 2018 in Kerala, India

2021 ◽  
Vol 8 (02) ◽  
pp. 48-52
Author(s):  
Chintha Sujatha ◽  
Reshma Rajan Sudha ◽  
Sreejith Lalitha Krishnankutty ◽  
Prajitha Kannamkottapilly Chandrasekharan
Keyword(s):  
Vector Control ◽  
Dengue Fever ◽  
Protective Factor ◽  
Significant Risk ◽  
Public Health Problem ◽  
Community Level ◽  
Control Measures ◽  
Major Public Health Problem ◽  
Cross Sectional ◽  
Breeding Habitats

BACKGROUND Dengue fever is a major public health problem in Kerala. Vector control measures practiced at household level is the most cost-effective way of controlling dengue. This study aims to assess environmental measures of vector control practised among households of suspected or confirmed dengue patients in Thiruvananthapuram district of Kerala. METHODS A cross sectional study was done among households of patients diagnosed with dengue fever and reported in Integrated Disease Surveillance Programme (IDSP) in Thiruvananthapuram district from June to December 2018. Investigators interviewed the household members and made direct observations to collect data on vector control practices using a structured questionnaire. RESULTS A total of 108 houses were surveyed. Potential breeding habitats were found in 58 (53.7 %) houses. Aedes larva was found in containers from four (3.7 %) houses. Dry day observance was not regular with only 5 (4.6 %) houses practicing it weekly. Waste management practiced was proper in 47 (43.5 %) houses. Community level pre monsoon preparedness for epidemics was done in the vicinity of 53 (49.1 %) houses and it was found to be a protective factor against presence of breeding habitats in and around houses (p = 0.013). Low education (p = 0.012) and low occupational status (p = 0.017) were found to be significant risk factors. CONCLUSIONS Even during an epidemic, with occurrence of infections in the family, only half of the households are practising adequate vector control methods. Community level interventions and targeted information education campaign will help improve practice of environmental methods of vector control in dengue. KEYWORDS Dengue, Vector Control, Aedes Control, Environmental Methods, Community Interventions

scholarly journals VULNERABILITY TEST OF Aedes aegypti LARVA AGAINST TEMEFOS IN WAY KANDIS, BANDAR LAMPUNG

2020 ◽  
Vol 7 (2) ◽  
pp. 73-78
Author(s):  
Nurul Hanifah ◽  
EMANTIS ROSA ◽  
Endah Seytaningrum
Keyword(s):  
Aedes Aegypti ◽  
Vector Control ◽  
Incidence Rate ◽  
Dengue Fever ◽  
Susceptibility Status

Aedes aegypti is a major vector of Dengue Fever (DHF) that is spread through mosquito bites. However, Bandar Lampung ranked 3rd out of 15 districts in Lampung Province with an IR (Incidence Rate) of 59.43. One way to reduce dengue cases is vector control. Temefos is commonly used as a chemical vector's control and it is possible can cause resistance to larvae. The information about Aedes Aegypty has not been widely known about larval of Aedes aegypty's susceptibility towards Temefos in Lampung Province. Therefore, this study aims to determine the susceptibility status of Aedes aegypti larvae towards Temefos in Way Kandis Village, Tanjung Senang Regency, Bandar Lampung. This research was conducted in December 2018 - February 2019. This study uses five different temefos concentrations, i.e ;0 mg / L concentration as control, 0.005 mg / L, 0.01 mg / L, 0.02 mg / L, and 0 , Each 03 mg / L was repeated in 4 times. Observations were made by calculating the number of larvae that fainted, died, and lived. The results show that the susceptibility of Aedes aegypti towards Temefos in Way Kandis Village, Tanjung Senang Regency, Bandar Lampung City, is categorized as susceptible in the concentration range of 0.005 - 0.03 mg / L.

scholarly journals Short Communication: Genotyping of kdr allele in insecticide resistant-Aedes aegypti populations from West Sumatra, Indonesia

2018 ◽  
Vol 19 (2) ◽  
pp. 502-508
Author(s):  
HASMIWATI HASMIWATI ◽  
SUPARGIYONO SUPARGIYONO
Keyword(s):  
Aedes Aegypti ◽  
Dengue Fever ◽  
Short Communication ◽  
Point Mutations ◽  
Pcr Analysis ◽  
Chemical Insecticide ◽  
Paper Test ◽  
Specific Primers ◽  
West Sumatra ◽  
Allele Specific

Hasmiwati, Supargiyono. 2018. Short Communication: Genotyping of kdr allele in insecticide resistant-Aedes aegypti populations from West Sumatra, Indonesia. Biodiversitas 19: 502-508. Aedes aegypti, the primary vector of Dengue fever, is widely distributed in Indonesia including in West Sumatra. Chemical insecticide is an effective way of shedding the chain of Dengue fever transmission. Long-term applications of insecticides have resulted in the development of resistance in Ae. aegypti populations. Knockdown resistance (kdr) allele as a result of point mutations has been found in Voltage-Gated Sodium Channel (VGSC) gene. This study aimed to design allele-specific primers to detect the kdr allele mutations. Ae aegypti samples were collected from several dengue endemic areas in West Sumatra. The susceptibility of adult mosquitos to insecticides was determined by bioassays using impregnation paper test with 0.18% malathion and 0.75% permethrin. In this study, we successfully confirmed that the A. populations have point mutations in the VGSC gene corresponding to S989P and V1016G amino acid substitutions. To genotype S989P and V1016G alleles, we designed kdr allele-specific primers based on the sequence of VGSC gene (NCBI Accession number No. EU399179.1. PCR analysis using the kdr allele-specific primers successfully identified the genotype of Ae. aegypti populations resistant to malathion and permethrin in West Sumatra.

scholarly journals Pemetaan Densitas Larva Aedes Aegypti Berdasarkan Pemberantasan Sarang Nyamuk (PSN) di Kelurahan Paccerakkang dan Tamalanrea

2020 ◽  
Vol 1 (2) ◽  
pp. 110-121
Author(s):  
Thoeng Fenni C. Effendy ◽  
Hasanuddin Ishak ◽  
Agus Bintara Birawida
Keyword(s):  
At Risk ◽  
High Risk ◽  
Aedes Aegypti ◽  
Dengue Fever ◽  
Sampling Method ◽  
Analytic Approach ◽  
Mosquito Vectors ◽  
Cross Sectional ◽  
Interview Guide ◽  
Dengue Prevention

Makassar City is one of the areas most at risk of Dengue Fever (DHF). One form of dengue prevention is to break the chain of transmission of mosquitoes, which is to prevent the breeding of mosquito vectors through efforts to eradicate mosquito nests (PSN). Mapping the density of aedes aegypti mosquitoes based on the behavior of eradicating mosquito nests (PSN) in Paccerakkang Village, Tamalanrea Village, Makassar City. This type of research is an observational survey with cross sectional method with descriptive analytic approach and using a questionnaire as an interview guide. The sample in this study was the house of DHF sufferers and houses within a radius of 100 meters from patients who were in Paccerakkang Village as many as 98 houses and Tamalanrea Village 61 houses were determined using purposive sampling method. The results of this study found that 39.8% of respondents' houses in Paccerakkang were found to be larvae and in Tamalanrea at 62.3%. 3M's behavior in both village is also incomplete and low, namely 14.3% and 13.1% respectively, while the use of bubate abate is 48% and 34.4%. Based on the Density Figure (DF) determined by WHO, the two villages are included in areas with Angka Bebas Jentik (ABJ) which have a high risk of DHF transmission.

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.

scholarly journals Vector control measures failed to affect genetic structure of Aedes aegypti in a sentinel metropolitan area of Brazil

Acta Tropica ◽  
2013 ◽  
Vol 128 (3) ◽  
pp. 598-605
Author(s):  
Kathleen R. Souza ◽  
Gilmar Ribeiro ◽  
Carlos Gustavo Silva dos Santos ◽  
Eliaci Couto de Lima ◽  
Paulo R.S. Melo ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Aedes Aegypti ◽  
Vector Control ◽  
Metropolitan Area ◽  
Control Measures

scholarly journals Ongoing outbreak of dengue type 1 in the Autonomous Region of Madeira, Portugal: preliminary report

2012 ◽  
Vol 17 (49) ◽  
Author(s):  
C A Sousa ◽  
M Clairouin ◽  
G Seixas ◽  
B Viveiros ◽  
M T Novo ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Dengue Fever ◽  
Preliminary Report ◽  
Control Measures ◽  
Local Health ◽  
Autonomous Region ◽  
Health Authorities ◽  
Local Health Authorities

Following the identification of two autochthonous cases of dengue type 1 on 3 October 2012, an outbreak of dengue fever has been reported in Madeira, Portugal. As of 25 November, 1,891 cases have been detected on the island where the vector Aedes aegypti had been established in some areas since 2005. This event represents the first epidemic of dengue fever in Europe since 1928 and concerted control measures have been initiated by local health authorities.

scholarly journals Short Communication: A checklist of the mosquito species (Diptera: Culicidae) in the Suan Phueng District, Ratchaburi Province, Thailand

2019 ◽  
Vol 20 (2) ◽  
pp. 468-473
Author(s):  
TANAWAT CHAIPHONGPACHARA
Keyword(s):  
Aedes Aegypti ◽  
Culex Quinquefasciatus ◽  
Endemic Area ◽  
Short Communication ◽  
Mosquito Control ◽  
Mosquito Species ◽  
Control Measures ◽  
Mosquito Vectors ◽  
Armigeres Subalbatus ◽  
Anopheles Barbirostris

Abstract. Chaiphongpachara T. 2019. Short Communication: A checklist of the mosquito species (Diptera: Culicidae) in the Suan Phueng District, Ratchaburi Province, Thailand. Biodiversitas 20: 468-473. Mosquito is a medically important insect, which is a vector to transmit pathogens to humans. There are several methods to reduce the numbers mosquitoes, which requires entomological knowledge. It is critical to know the species of mosquitoes in the area to choose the most suitable method to provide vector control, specifically, to target mosquito species. In this study, we investigated the species of mosquito vectors in the Huay Nam Nak Village in the Suan Phueng District, Ratchaburi Province, Thailand, which is an endemic area of mosquito-borne diseases, especially malaria and dengue fever. Mosquito species were collected by the Mosquito Magnet® Independence trap from the Huay Nam Nak Village. A total of 1,002 mosquitoes, divided into eight species in four genera, including Anopheles barbirostris s.l. van der Wulp (118 individuals), An. subpictus s.l. Grassi (127 individuals), Culex quinquefasciatus Say (186 individuals), Cx. vishnui Theobald (204 individuals), Cx. whitmorei Giles (198 individuals), Aedes aegypti Linnaeus (45 individuals), Ae. albopictus Skuse (78 individuals), and Armigeres subalbatus Coquillett (46 individuals). This checklist of the mosquito species is very important information to set mosquito control measures that suit each area.

scholarly journals First two autochthonous dengue virus infections in metropolitan France, September 2010

2010 ◽  
Vol 15 (39) ◽  
Author(s):  
G La Ruche ◽  
Y Souarès ◽  
A Armengaud ◽  
F Peloux-Petiot ◽  
P Delaunay ◽  
...  
Keyword(s):  
Dengue Virus ◽  
Vector Control ◽  
Dengue Fever ◽  
Aedes Albopictus ◽  
Case Finding ◽  
Control Measures ◽  
Active Case Finding ◽  
Virus Infections ◽  
First Time ◽  
Local Transmission

In September 2010, two cases of autochthonous dengue fever were diagnosed in metropolitan France for the first time. The cases occurring in Nice, south-east France, where Aedes albopictus is established, are evidence of dengue virus circulation in this area. This local transmission of dengue calls for further enhanced surveillance, active case finding and vector control measures to reduce the spread of the virus and the risk of an epidemic.

scholarly journals Abundance and Updated Distribution of Aedes aegypti (Diptera: Culicidae) in Cabo Verde Archipelago: A Neglected Threat to Public Health

2020 ◽  
Vol 17 (4) ◽  
pp. 1291
Author(s):  
Silvânia Da Veiga Leal ◽  
Isaias Baptista Fernandes Varela ◽  
Aderitow Augusto Lopes Gonçalves ◽  
Davidson Daniel Sousa Monteiro ◽  
Celivianne Marisia Ramos de Sousa ◽  
...  
Keyword(s):  
Public Health ◽  
Aedes Aegypti ◽  
Vector Control ◽  
Disease Outbreaks ◽  
Control Measures ◽  
Domestic Water ◽  
Breeding Sites ◽  
Cabo Verde ◽  
Larval Survey ◽  
Vector Borne

Background: Mosquito-borne viruses, such as Zika, dengue, yellow fever, and chikungunya, are important causes of human diseases nearly worldwide. The greatest health risk for arboviral disease outbreaks is the presence of the most competent and highly invasive domestic mosquito, Aedes aegypti. In Cabo Verde, two recent arbovirus outbreaks were reported, a dengue outbreak in 2009, followed by a Zika outbreak in 2015. This study is the first entomological survey for Ae. aegypti that includes all islands of Cabo Verde archipelago, in which we aim to evaluate the actual risk of vector-borne arboviruses as a continuous update of the geographical distribution of this species. Methods: In order to assess its current distribution and abundance, we undertook a mosquito larval survey in the nine inhabited islands of Cabo Verde from November 2018 to May 2019. Entomological larval survey indices were calculated, and the abundance analyzed. We collected and identified 4045 Ae. aegypti mosquitoes from 264 positive breeding sites in 22 municipalities and confirmed the presence of Ae. aegypti in every inhabited island. Results: Water drums were found to be the most prevalent containers (n = 3843; 62.9%), but puddles (n = 27; 0.4%) were the most productive habitats found. The overall average of the House, Container, and Breteau larval indices were 8.4%, 4.4%, and 10.9, respectively. However, 15 out of the 22 municipalities showed that the Breteau Index was above the epidemic risk threshold. Conclusion: These results suggest that if no vector control measures are considered to be in place, the risk of new arboviral outbreaks in Cabo Verde is high. The vector control strategy adopted must include measures of public health directed to domestic water storage and management.

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