Impact of dengue-preventive behaviors on Aedes immature production in Bang Kachao, Samut Prakan Province, Thailand: a cross-sectional study

Waewwab, Pathavee; Sungvornyothin, Sungsit; Potiwat, Rutcharin; Okanurak, Kamolnetr

doi:10.1186/s12889-020-8394-5

Cited by 10 publications

(7 citation statements)

References 15 publications

(27 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most prevalent of these diseases are malaria and dengue fever, which are transmitted by Anopheles and Aedes mosquitoes, respectively [ 1 ] While vector control has contributed significantly to malaria control in Africa [ 2 ], both dengue fever and other Aedes- borne diseases remain highly neglected in the continent. Despite recent successes with the use of Wolbachia endosymbionts [ 3 ], the control of Aedes -borne viruses still relies mostly on personal protection measures [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Observing the distribution of mosquito bites on humans to inform personal protection measures against malaria and dengue vectors

et al. 2022

View full text Add to dashboard Cite

Background Understanding mosquito biting behaviours is important for designing and evaluating protection methods against nuisance biting and mosquito-borne diseases (e.g. dengue, malaria and zika). We investigated the preferred biting sites by Aedes aegypti and Anopheles arabiensis on adult volunteers in standing or sleeping positions; and estimated the theoretical protection limits affordable from protective clothing or repellent-treated footwear. Methods Adult volunteers dressed in shorts and t-shirts were exposed to infection-free laboratory-reared mosquitoes inside screened chambers from 6am to noon (for day-biting Ae. aegypti) or 6pm to midnight (night-biting An. arabiensis). Attempted bites on different body parts were recorded. Comparative observations were made on same volunteers while wearing sandals treated with transfluthrin, a vapour-phase pyrethroid that kills and repels mosquitoes. Results An. arabiensis bites were mainly on the lower limbs of standing volunteers (95.9% of bites below the knees) but evenly-distributed over all exposed body surfaces when the volunteers were on sleeping positions (only 28.8% bites below knees). Ae. aegypti bites were slightly concentrated on lower limbs of standing volunteers (47.7% below knees), but evenly-distributed on sleeping volunteers (23.3% below knees). Wearing protective clothing that leave only hands and head uncovered (e.g. socks + trousers + long-sleeved shirts) could theoretically prevent 78–83% of bites during sleeping, and at least 90% of bites during non-sleeping hours. If the feet are also exposed, protection declines to as low as 36.3% against Anopheles. The experiments showed that transfluthrin-treated sandals reduced An. arabiensis by 54–86% and Ae. aegypti by 32–39%, but did not change overall distributions of bites. Conclusion Biting by An. arabiensis and Ae. aegypti occur mainly on the lower limbs, though this proclivity is less pronounced in the Aedes species. However, when hosts are on sleeping positions, biting by both species is more evenly-distributed over the exposed body surfaces. High personal protection might be achieved by simply wearing long-sleeved clothing, though protection against Anopheles particularly requires covering of feet and lower legs. The transfluthrin-treated footwear can reduce biting risk, especially by An. arabiensis. These findings could inform the design and use of personal protection tools (both insecticidal and non-insecticidal) against mosquitoes and mosquito-borne diseases.

show abstract

Section: Introductionmentioning

confidence: 99%

Observing the distribution of mosquito bites on humans to inform personal protection measures against malaria and dengue vectors

et al. 2022

View full text Add to dashboard Cite

show abstract

“…To eliminate the main breeding places for Aedes sp. it is recommended that containers be emptied, tightly closed, and cleaned regularly, while used goods that can accommodate can be disposed or recycled [45].…”

Section: Potential Vector Breeding Placesmentioning

confidence: 99%

Determinant factor affected the presence of Aedes sp. in a customary village

Alvira

Satoto

2023

IJPHS

View full text Add to dashboard Cite

Vector surveillance and control are the only reliable means for the prevention and control of dengue fever and dengue hemorrhagic fever, such as in Customary Village environments. Indonesia is an archipelagic country that has many Customary Villages, so the variables that affect the breeding of dengue vectors are numerous and complex. This study identifies potential vector breeding places and environmental factors for the presence of Aedes sp. in Customary Villages. A study with a cross-sectional design was conducted in the Segenter Customary Villages, West Nusa Tenggara, Indonesia. Simple and multiple logistic regression analysis to identify risk factors associated with the presence of Aedes larvae. The results showed that the entomological index was in the high category and at risk as a potential breeding place for the Aedes sp. The determinant factor that affects the presence of dengue vectors is the traditional type of house (p-value=0.005; RP=2.138). This factor is strengthened by the 70-90% humidity (p-value= 0.009; RP=1.764), 25-30 <sup>o</sup>C house temperatures (p-value=0.011; RP=1.650), and mixed type house (p-value=0.067; RP=1.413). These findings contribute to the development of an early warning system regarding the potential spread of Aedes vector-borne diseases, increase awareness, promote and prevention of dengue fever (DF), and its vectors to healthy tourism in Indonesia.

show abstract

“…The disease is one of the main threats to public health and a leading cause of hospitalization in Thailand [ 6 ]. The first DENV infection was reported in 1949, the first outbreak was in 1958 [ 7 , 8 ], and several major outbreaks with high morbidity were documented in 1987, 1997, 1998, 2001, 2013, 2015, and 2019 across the country [ 9 , 10 , 11 ]. One of the largest dengue outbreaks in Thailand was in 1987 with 174,285 cases and 1008 deaths.…”

Section: Introductionmentioning

confidence: 99%

Ecological, Social, and Other Environmental Determinants of Dengue Vector Abundance in Urban and Rural Areas of Northeastern Thailand

Rahman

Ekalaksananan

Zafar

et al. 2021

IJERPH

View full text Add to dashboard Cite

Aedes aegypti is the main vector of dengue globally. The variables that influence the abundance of dengue vectors are numerous and complex. This has generated a need to focus on areas at risk of disease transmission, the spatial-temporal distribution of vectors, and the factors that modulate vector abundance. To help guide and improve vector-control efforts, this study identified the ecological, social, and other environmental risk factors that affect the abundance of adult female and immature Ae. aegypti in households in urban and rural areas of northeastern Thailand. A one-year entomological study was conducted in four villages of northeastern Thailand between January and December, 2019. Socio-demographic; self-reported prior dengue infections; housing conditions; durable asset ownership; water management; characteristics of water containers; knowledge, attitudes, and practices (KAP) regarding climate change and dengue; and climate data were collected. Household crowding index (HCI), premise condition index (PCI), socio-economic status (SES), and entomological indices (HI, CI, BI, and PI) were calculated. Negative binomial generalized linear models (GLMs) were fitted to identify the risk factors associated with the abundance of adult females and immature Ae. aegypti. Urban sites had higher entomological indices and numbers of adult Ae. aegypti mosquitoes than rural sites. Overall, participants’ KAP about climate change and dengue were low in both settings. The fitted GLM showed that a higher abundance of adult female Ae. aegypti was significantly (p < 0.05) associated with many factors, such as a low education level of household respondents, crowded households, poor premise conditions, surrounding house density, bathrooms located indoors, unscreened windows, high numbers of wet containers, a lack of adult control, prior dengue infections, poor climate change adaptation, dengue, and vector-related practices. Many of the above were also significantly associated with a high abundance of immature mosquito stages. The GLM model also showed that maximum and mean temperature with four-and one-to-two weeks of lag were significant predictors (p < 0.05) of the abundance of adult and immature mosquitoes, respectively, in northeastern Thailand. The low KAP regarding climate change and dengue highlights the engagement needs for vector-borne disease prevention in this region. The identified risk factors are important for the critical first step toward developing routine Aedes surveillance and reliable early warning systems for effective dengue and other mosquito-borne disease prevention and control strategies at the household and community levels in this region and similar settings elsewhere.

show abstract

Impact of dengue-preventive behaviors on Aedes immature production in Bang Kachao, Samut Prakan Province, Thailand: a cross-sectional study

Cited by 10 publications

References 15 publications

Observing the distribution of mosquito bites on humans to inform personal protection measures against malaria and dengue vectors

Observing the distribution of mosquito bites on humans to inform personal protection measures against malaria and dengue vectors

Determinant factor affected the presence of Aedes sp. in a customary village

Ecological, Social, and Other Environmental Determinants of Dengue Vector Abundance in Urban and Rural Areas of Northeastern Thailand

Contact Info

Product

Resources

About