Study on filariaisis mosquitoes and susceptibility of Cx.quinquefasciatus to some insecticides were conducted in September 2003 at Khanh Trung commune, Khanh Vinh district, Khanh Hoa province. The results showed that: 16 mosquito species of 5 races had been found, in which mosquitoes were main vectors of Wuchereria bancrofti (Cx quinquefasciatus, Cx.vishnui) had high density, while the vectors of Brugia malayi (Ma.uniformis) had very low density. 227 mosquitoes of 4 species (An.barbumborsus, Cx quinquefasciatus, Cx.vishnui, Cx.tritaeniorhynchus) were dissected, none of them were positive with microfilaria. Cx. quinquefasciatus was found to be highly resistant to malathion, lambda-cyhalothrin and alpha-cypermethrin with mortalities of 60,5%, 11% and 21%, respectively
mosquitoes ; Filariasis ; epidemiology ; Insecticides

Fasciola eggs were collected from stool of a woman aged 21 years old in Nghe An province. Miracidium were obtained from these eggs after 20 days culture in the laboratory. A portion of the mitochondrial-encoded nad1 gene from these miracidiums were amplified using polymerase chain reaction (PCR) and comparatively aligned with the known corresponding sequences of Fasciola gigantica taken from cattle in Hoa Binh, Lai Chau, Lang Son, Ninh Binh and international strains (from Korea, Japan and Indonesia). The results showed high similar co-efficient of nucleotide 98-99% and amino acid 95-99%, but lower rate than that of Fasciola hepatica (Australian and American) (90-92%). However, it is suggested that the Vietnamese F.gigantica have had the genetic signs hybridized with F.hepatica
Women ; diagnosis ; Ovum ; Fasciola ; Molecular Diagnostic Techniques

A study was conducted in 2003 in Yen Hai commune, Yen Hung distric of Quang Ninh province. A KAP survey was made by interviewing 172 household heads and 612 individuals aged  10 years. 586 stool samples were examined by Kato technique. The results: no eggs of trematode and cestode were found while the cumulative rate of nematode infection was 86% of which Ascaris infection was 82.8%; single infection of nematode was 44.8%; triple infection was 2.8%; double infection was 52.6%, mostly of Ascaris and Trichuris. 97.7% of households were found to have latrine (one or two compartments). 19.8% of household were found to still use fresh stool as fertilizer for cultivation and 99.4% received no information on helminthes infection control
Helminths ; epidemiology ; diagnosis

With the assistance of WHO and the National Institute of Malariology, Parasitology and Entomology, the Helminth Control Project for primary school children has effectively been conducted during the years of 2002 -2004 in Phu Loc distric, Thua Thien - Hue province. The knowledge and awareness of children and their parents on the control and prevention of the disease were found much improved after the health education took place. The helminth prevalence and the intensity of infection were considerably reduced after the periodical mass deworming campains with 6 month intervals. Mebendazole appeared to be highly effective against such intestinal helminths as Ascaris, Trichuris and hook worms. It is recommended to maintain the results of the project in Phu Loc district, to expand and apply this project model in other districs. Integration of helminth control with other health programs of hygiene and enviroment should also be encouraged
Helminths ; epidemiology ; diagnosis ; child ; schools

The conference "Enhance the ability for malaria prevention of some provinces in Tay Nguyen the second time" was held in Da Lat, Lam Dong province on 22 November 2004 by the Ministry of Health. Assessmentary the situation of malaria in this area showed that: There was without malaria outbreak; the mortality of malaria decreased 62.5% (in quantity) and 63.3% (rate of population). The infection of malaria fell down by 30,9% (in quantity) and 26.3% (rate of population). It is the first time for many years, the mortality and the infection rate of malaria in the year on year basic in Tay Nguyen - Binh Phuoc areas reached lower level compared with the whole country. The main causes as followed: There were time by instructions from the Ministry of Health's leaders; The national project on malaria prevention, the Institutes for malaria - parasite - insect. The main measures included: continueing to strenthen the socialization >?< for malaria prevention; Mobilizing all resources from the central to the local level, from the community, from the International projects; Enhancing progranda on health education - malaria prevention
Malaria ; prevention & control ; epidemiology

Remote Sensing and GIS technology was studied in 2003 to detect and predict the malaria risk in Ham Thuan Nam district, Binh Thuan province where malaria is endemic. The results showed that there was a strong relationship between natural, environmental and socio-economic indicators and malaria transmission in different areas of the district. The malaria morbidity rate from 1996 to 2002 and enviromental parameters such as land cover, vegetation, climate, meteorology... were used for building up a map to show the risk of malaria of the district through the retrospective and existing data SPOT, LANDSAT and ASTER satellite imageries. This map is corresponding with the malaria stratification maps of the district. Based on this malaria risk map, malaria situation and epidemic can be detected and prevented
Malaria ; risk factors ; diagnosis ; epidemiology

Dac Lac is a mountainous province in the centre of Vietnam with the population of 1,735,501 people, 13 districts, 1 town, 165 communes, 2,207 hamlets. The population and ethics in Dac Lac province increase rapidly due to freedly migrated of the people from the whole country, from 1985 up to now. Those characteristics together with complex geographical condition and the largest area of the country, forests, together with low mountains, so malaria in Dac Lac province has annualy the highest incidence and mordarity of the whole country. The situation of malaria in Dac Lac province decrease and stabilized in July 2004. In order to continuing decrease and stabilize the malaria, in Dac Lac province, it must be continue to strengthen the control of malaria, implement the plan of malaria prevention, consolidate the basic network of health and speciality of malaria
Malaria ; epidemiology ; prevention & control

All of 8 villages of Lam Thuy and Ngan Thuy communes are high malaria endemic areas. The slide positive rates (SPR) in Lam Thuy and Ngan Thuy are 11.56% and 36.20% respectively; P. falciparum positive rates are 72.50% and 67.80%; Parasite positive rates in children at 1-5 years old are 45.00% and 32.20%. Habit of sleeping without bed net of the local population and unfectioning microscopic points have made the malaria situation higher in these two communes. Anopheline component in Km 14 village, Ngan Thuy commune, Le Thuy district is abundant (19 species): with the presentation of the two main malaria vectors An.dirus and An.minimus. The landscape in this area is suitable for the production and development of two main malaria vectors as well as other anopheline mosquitoes
Malaria ; mosquitoes ; diagnosis ; Anopheles

From 2001 to 2003, therapeutic efficacy of anti-malaria drug C.V8 was assessed in the uncomplicated P.falciparum patients in Son Trach commune. Bo Trach district, Quang Binh province. The patients were dosed with a three-day course C.V8. The cure rate was found to be 95.7% and the recrudescence rate of 4.3%. It is concluded that C.V8 tablet is an effective anti-malarial drug in treatment of uncomplicated P.falciparum malaria in Quang Binh province
Malaria ; malaria, falciparum ; Therapeutics ; therapy

To determine the prevalence of G6PD deficiency, the cross sectional surveys were carried out in 5922 subjects (4,043 males and 1,879 females) from 14 different ethnic groups of population in 11 provinces of Vietnam from 1996 to September 2004. Two methods with qualitative virual fluorescent test and rapid test were used. The samples from 559 individuals were independently and comparatively analyzed by two methods for calculating the Kappa index. The Kappa index of 0.081 reflected a high compatibeness of two methods. The prevalence of G6PD deficiency varied from area to area, and D6PD of males was much different from group to group population. There was no relationship between G6PD and malaria
Glucosephosphate Dehydrogenase ; epidemiology ; deficiency