Entomological Surveillance for Zika and Dengue Virus in Aedes Mosquitoes: Implications for Vector Control in Thailand

Kosoltanapiwat, Nathamon; Tongshoob, Jarinee; Singkhaimuk, Preeraya; Nitatsukprasert, Chanyapat; Davidson, Silas A.; Ponlawat, Alongkot

doi:10.3390/pathogens9060442

Cited by 14 publications

(13 citation statements)

References 33 publications

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“…Epidemiological surveillance of dengue infection was conducted based on diagnosis reports from hospitals and public health centers. Meanwhile, mosquito and larval density data were obtained through entomological surveillance [27], [28]. The DHF surveillance system was perfomed by continuously collecting data on the infection and vector density to detect potential dengue outbreaks and control them quickly [10], [29], [30].…”

Section: Discussionmentioning

confidence: 99%

Potential Development of Digital Environmental Surveillance System in Dengue Control: A Qualitative Study

Purnama

Susanna²,

Achmadi

et al. 2021

Open Access Maced J Med Sci

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Background: The development of digital environmental technology can be conducted to implement reports, surveillance, and manage dengue control. Therefore, this study aims to determine the barriers to the use of paper-based and the potential development of digital environmental technology in dengue control. Methods In-depth qualitative interviews were conducted using 14 key informants and four focus group discussions (FGD) from May-August 2021 in Denpasar City, Bali. The interviews were consistent with the flow of the epidemiological and entomological surveillance system, the obstacles to the dengue control program, the potential for the application of digital technology, and the challenges in the application of digital surveillance technology. Furthermore, open-ended questions and content analysis by qualitative study procedures were adopted. The results were transcribed verbatim and triangulation of sources was conducted for data validation. Results The reporting system that used paper-based was not optimally implemented due to repetition of reporting, speed of information, data bias, performance measurement as well as case surveillance and reporting system constraints. An integrated digital environmental surveillance system (SILIRA) was also developed for dengue control. In the current Covid-19 pandemic, the need for digital applications is high due to the policy of not accepting guests and keeping a distance. Epidemiological surveillance for case data collection, entomological surveillance for larva density, case reporting, and educational videos are the required data in the application. Conclusion The development of an integrated application for an environmental monitoring system can be created for the continuous reporting of case information and larval density for dengue hemorrhagic fever control. Keywords: digital, surveillance, environment, dengue

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Section: Discussionmentioning

confidence: 99%

Potential Development of Digital Environmental Surveillance System in Dengue Control: A Qualitative Study

Purnama

Susanna²,

Achmadi

et al. 2021

Open Access Maced J Med Sci

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“…The development of efficient natural therapeutics against DENV and ZIKV infection has become a priority because of the risk of CZS, especially in regions infested by mosquito vectors of disease [ 8 , 16 , 17 , 18 ]. It has been reported that plant extracts rich in flavonoids, terpenoids, coumarins, polyphenols and even some essential oils may inhibit DENV and ZIKV infection [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Cranberry Pomace Extract Exerts Antiviral Activity against Zika and Dengue Virus at Safe Doses for Adult Zebrafish

Tamkutė

Haddad

Diotel

et al. 2022

Viruses

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Mosquito-borne dengue virus (DENV) and zika virus (ZIKV) infections constitute a global health emergency. Antivirals directly targeting the virus infectious cycle are still needed to prevent dengue hemorrhagic fever and congenital zika syndrome. In the present study, we demonstrated that Cranberry Pomace (CP) extract, a polyphenol-rich agrifood byproduct recovered following cranberry juice extraction, blocks DENV and ZIKV infection in human Huh7.5 and A549 cell lines, respectively, in non-cytotoxic concentrations. Our virological assays identified CP extract as a potential inhibitor of virus entry into the host-cell by acting directly on viral particles, thus preventing their attachment to the cell surface. At effective antiviral doses, CP extract proved safe and tolerable in a zebrafish model. In conclusion, polyphenol-rich agrifood byproducts such as berry extracts are a promising source of safe and naturally derived nutraceutical antivirals that target medically important pathogens.

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“…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%

“…The highest incidence rates (cases per 100,000 population) were found in the northeastern region [ 13 ]. All four DENV serotypes circulate in Thailand [ 9 , 14 , 15 ], and disease transmission is seasonal, with a peak in the rainy period from May to October [ 2 ].…”

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

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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.

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Entomological Surveillance for Zika and Dengue Virus in Aedes Mosquitoes: Implications for Vector Control in Thailand

Cited by 14 publications

References 33 publications

Potential Development of Digital Environmental Surveillance System in Dengue Control: A Qualitative Study

Potential Development of Digital Environmental Surveillance System in Dengue Control: A Qualitative Study

Cranberry Pomace Extract Exerts Antiviral Activity against Zika and Dengue Virus at Safe Doses for Adult Zebrafish

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

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