Abundance and prevalence of Aedes aegypti immatures and relationships with household water storage in rural areas in southern Viet Nam

Nguyen, Le; Clements, Archie C. A.; Jeffery, Jason A. L.; Yến, Nguyễn Thị; Nam, Vũ Sinh; Vaughan, Gregory; Shinkfield, Ramon; Kutcher, Stan; Gatton, Michelle L.; Kay, Brian H.; Ryan, Peter

doi:10.1016/j.inhe.2010.11.002

Cited by 25 publications

(26 citation statements)

References 16 publications

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“…14,15 The options of household spraying, coils, and gels would be affordable by the wealthy, and sleeping under a mosquito net is more appropriately directed against nocturnal vectors. Thus, use of fish as one practical suggestion had been adopted only by 23% of case and control households.…”

Section: Discussionmentioning

confidence: 99%

High Household Economic Burden Caused by Hospitalization of Patients with Severe Dengue Fever Cases in Can Tho Province, Vietnam

Tam

Dat²,

Huu³

et al. 2012

The American Society of Tropical Medicine and Hygiene

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Abstract. During 2006-2007, a cohort of 144 confirmed dengue cases in Can Tho Province, Vietnam were compared with a matching set of 144 households that had no dengue cases. Approximately 6-9 months after sickness, there were no significant differences in terms of knowledge of the etiology of dengue, mosquito breeding habitats, and prevention measures in respondents from both sets of households. There was also no difference in the abundance of Aedes aegypti (Linn.) adults but the average numbers of late instar and pupal Ae. aegypti per household were greater in the negative control houses. Thus, the risk seemed to be no higher in case households, although it is conceivable that changes may have occurred in either group over the intervening period. The average cost for a dengue patient was 2,798,000 Vietnamese Dong (VND) (US$167.77), 2,154,000 VND for direct costs, and 644,000 VND for indirect costs. There was a 22% difference in cost for those with and without health insurance. In terms of impact on family economies, 47.2% had to borrow money for treatment, and after 6 months, 71.7% had not begun or had only managed part repayments. Approximately 72.9% indicated that the cost of supporting a dengue patient had impacted on the family economy, with the loss averaging 36% of the annual income in the lowest economic quartile.

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Section: Discussionmentioning

confidence: 99%

High Household Economic Burden Caused by Hospitalization of Patients with Severe Dengue Fever Cases in Can Tho Province, Vietnam

Tam

Dat²,

Huu³

et al. 2012

The American Society of Tropical Medicine and Hygiene

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“…In March 2010, the project received a final external review by Vietnamese health professionals 10. Overall, the project was judged to achieve its objectives with high relevance, efficiency, effectiveness, and sustainability.…”

Section: Discussionmentioning

confidence: 99%

Community-Based Control of Aedes aegypti By Using Mesocyclops in Southern Vietnam

Nam¹,

Yến²,

Duc³

et al. 2012

The American Society of Tropical Medicine and Hygiene

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We previously reported a new community-based mosquito control strategy that resulted in elimination of Aedes aegypti (Linn.) in 40 of 46 communes in northern and central Vietnam, and with annual recurrent total costs (direct and indirect) of only $0.28–$0.89 international dollars per person. This control strategy was extended to four provinces in southern Vietnam in Long An and Hau Giang (2004–2007) and to Long An, Ben Tre, and Vinh Long (2005–2010). In a total of 14 communes with 124,743 residents, the mean ± SD of adult female Ae. aegypti was reduced from 0.93 ± 0.62 to 0.06 ± 0.09, and the reduction of immature Ae. aegypti averaged 98.8%. By the final survey, no adults could be collected in 6 of 14 communes, and one commune, Binh Thanh, also had no immature forms. Although the community-based programs also involved community education and clean-up campaigns, the prevalence of Mesocyclops in large water storage containers > 50 liters increased from 12.77 ± 8.39 to 75.69 ± 9.17% over periods of 15–45 months. At the conclusion of the study, no confirmed dengue cases were detected in four of the five communes for which diagnostic serologic analysis was performed. The rate of progress was faster in communes that were added in stages to the program but the reason for this finding was unclear. At the completion of the formal project, sustainability funds were set up to provide each commune with the financial means to ensure that community-based dengue control activities continued.

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“…The mosquito's eggs will develop under conditions suitable with water characteristics. In addition, organic materials, microbial and water insect community contained in the water of breeding sites (container) also affects the life cycle of A. aegypti [11].…”

Section: Introductionmentioning

confidence: 99%

Prevention of Dengue Hemorrhagic Fever (DHF) Associated with the Aedes aegypti Larvae Presence based on the Type of Water Source

Hidayah¹,

Iskandar²,

Abidin³

2017

JTLS

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Aedes aegypti as the vector of Dengue Hemorrhagic Fever (DHF) disease likes to breed in the water containers. The larvae of A. aegypti mostly found in the bath water containers. The presence of A. aegypti larvae could be caused by the type of water source, the container's color, material, location, lid existence and the container's drain frequency. This study aimed to determine the association of water source type with larvae presence and the additional factors. This study used observational analytic with case control design. The case group consisted of households were using well water and the control group consisted of households were using tap water with a sample size of 130 households for each group. The sample collected by proportional random sampling in five villages. The data were analyzed by regression logistic test. The significant variables which associated with the presence of larvae were the water source type (OR = 1.923), container's color (OR = 2.345), container's location (OR = 2.241), container's lid existence (OR = 2.122) and the container's drain frequency (OR = 2.260). This study did not consider the significant association of the container's material. The dominant variable associated with the presence of larvae was the container's drain frequency which was controlled by the water source type, container's color and container's location.

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Abundance and prevalence of Aedes aegypti immatures and relationships with household water storage in rural areas in southern Viet Nam

Cited by 25 publications

References 16 publications

High Household Economic Burden Caused by Hospitalization of Patients with Severe Dengue Fever Cases in Can Tho Province, Vietnam

High Household Economic Burden Caused by Hospitalization of Patients with Severe Dengue Fever Cases in Can Tho Province, Vietnam

Community-Based Control of Aedes aegypti By Using Mesocyclops in Southern Vietnam

Prevention of Dengue Hemorrhagic Fever (DHF) Associated with the Aedes aegypti Larvae Presence based on the Type of Water Source

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