An evaluation of the current coverage and diminished rate of mosquito nets usage for malaria control plays an important role in malaria control planning. A survery was carried out between 1995 and 2003 in 15 hamlets of five communes of 3 malaria endemic districts in Thua Thien – Hue province. A high rate of bed-net usage was found in the surveyed hamlets. In average, the coverage reached the rate of 2.0 ± 0.3% nets per person. However a considerable rate of damaged nets (4.7 ± 1.2%) was also recorded in the surveys. Further surveys and studies should be conducted to determine the ways the bed-nets go down and get diminished for planning of more appropriate malaria control measures
Malaria ; Culicidae ; Mosquito Control

Adeal is a new type of larval mosquito control compound that inhibits larval development and emergence. Adeal is effective against various kinds of mosquitoes, including Anopheles spp., Aedes spp., and Culex spp. Long - term efficacy, even at a lower application dosage, easy handling requiring no special spraying or misting equipment. Adeal has been successfully tested in Japan, USA, Thailand, Sudan, Tanzania and Solomon Islands
Culicidae ; Mosquito Control

Studying the susceptibility of Aedes aegypti to some insecticides in 22 places of 11 provinces and cities in 4 different regions of Vietnam. Results: Ae. aegypti mosquito was still susceptible to Malathion but resistant to DDT in most of studied places. Ae. aegypti was susceptible to insecticides of perythroid group (such as permethrine, lambda-cyhalothrine, deltamethrine, and alphamethrine) in many places in Northern and Central Vietnam, while it was resistant in Southern Vietnam and the Central Highlands. Ae. aegypti was also resistant highly and widely to etofenprox
Insecticides ; Mosquito Control ; chemistry

An. minimus was collected from Hoa Son village, Luong Son district, Hoa Binh province in November 1997 and maintained in the laboratory of NIMPE by artificial mating techniques. Since 51st generation, a free mating colony in the small cages (with dimensions of 30 x 30 x 30cm) has been established by releasing 200 male and 200 female mosquitoes per cage. The releasing of additional 50 males of An. minimus to the cage has been found to stimulate the mating process in small cage
Anopheles ; Laboratories ; Mosquito Control

Background: Dengue Fever/Dengue Hemorrhagic Fever (DF/DHF) has emerged as one of the most important public health concerns in Viet Nam in recent years. Key breeding containers plays an important role in driving dengue vector control in the public. Objectives: The research was conducted to discover the dengue situation, its vectors and key containers to make relevant recommendations in reducing effectively the vector population. Subjects and methods: Two hundred households in two communes of Nam Dinh province (100 in each studied commune) were selected randomly. Vectors collected from the field were identified using mosquito key. The number of dengue larvae and mosquitoes were directly counted or adjustment methods were used to estimate the true number in each type of water storage facility. Results: In Minh Thuan commune, Ae. albopictus larvae were mainly concentrated in jars (49%) and discards (59%), most of Ae. aegypti was found in cement tanks with a volume more than 500L (72%). In Trung Dong commune, larvae of Ae. albopictus concentrated in jars (40%) and discards (25%) and aquariums (15%), while most of the Ae. aegypti larvae was discovered in cement tanks with volumes more than 500L (86%). Mosquito density index of Ae. albopictus in Trung Dong and Minh Thuan communes was 0.56 and 0.38, respectively. The Aedes larvae, houses for larvae and Breteau index were nearly at the threshold of dengue epidemic occurrence for Ae. aegypti and over a certain threshold for Ae. albopictus. Some recommendations were provided to help reduce the dengue vectors. Conclusion: Investigation of key mosquito larvae in water containers was useful in driving the effective dengue vector control. Further studies are required to evaluate the impact and methods to manage water containers in the local area.
Dengue fever ; mosquito ; vector control

In the study from 2002 to 2003, all participants were Raklay ethnic volunteers for mosquito collection for 5-8 years. Malaria parasitaemia was found in 40% of participants who had been beaten by sporozoites-infective An.dirus. The chance of infection depended on immune level, participant’s constitution, quantity and age of sporozoites… Monthly prophylaxis therapy with single dose of mefloquine reduced a possibility of malaria infection for forest sleeping people
Malaria ; prevention & control ; Mosquito Control ; therapeutics ;

Olyset net sunk with 2% permethrin was used in Hai Duong, Hai Phong, Thai Binh. The rate of density index and house index were decreased from 0.23 and 23.3 to zero and persisted by 9 months. Breteau index and larve-house index was also decresed from 8.3 and 6.7 to zero. Olyset net showed its effect on Aedes aegypti and in various mosquitos and insects
Dengue Hemorrhagic Fever ; Mosquito Control ; Disease ; epidemiology

Culex ; Marketing of Health Services ; Mosquito Control/*methods ; Tanzania ; Women

*Anopheles ; *Ascariasis ; *Communicable Disease Control ; *Diethylcarbamazine ; *Filariasis ; *Malaysia ; *Mosquito Control ; *Wuchereria

House-residual spraying and insecticide-treated bed nets have achieved some success in controlling anthropophilic and endophagic vectors. However, these methods have relatively low efficacy in Korea because Anopheles sinensis, the primary malaria vector, is highly zoophilic and exophilic. So, we focused our vector control efforts within livestock enclosures using ultraviolet black light traps as a mechanical control measure. We found that black light traps captured significantly more mosquitoes at 2 and 2.5 m above the ground (P < 0.05). We also evaluated the effectiveness of trap spacing within the livestock enclosure. In general, traps spaced between 4 and 7 m apart captured mosquitoes more efficiently than those spaced closer together (P > 0.05). Based on these findings, we concluded that each black light trap in the livestock enclosures killed 7,586 female mosquitoes per trap per night during the peak mosquito season (July-August). In May-August 2003, additional concurrent field trials were conducted in Ganghwa county. We got 74.9% reduction (P < 0.05) of An. sinensis in human dwellings and 61.5% reduction (P > 0.05) in the livestock enclosures. The black light trap operation in the livestock enclosures proved to b9e an effective control method and should be incorporated into existing control strategies in developed countries.
Animals ; Anopheles/*radiation effects ; Female ; Housing, Animal ; Humans ; Korea ; Mosquito Control/*methods ; *Ultraviolet Rays