Wacharapong Saengnill | Ubon Ratchathani University (original) (raw)

Papers by Wacharapong Saengnill

Research paper thumbnail of Exploring the Relationship between Melioidosis Morbidity Rate and Local Environmental Indicators Using Remotely Sensed Data

International journal of environmental research and public health/International journal of environmental research and public health, May 13, 2024

Research paper thumbnail of Using Remote Sensing and Geographic Information Systems to Study Risk Areas of Malaria in Ubon Ratchathani Province, Thailand

Environment and Natural Resources Journal, 2008

Research paper thumbnail of Exploring the Relationship between Melioidosis Morbidity Rate and Local Environmental Indicators Using Remotely Sensed Data

Int. J. Environ. Res. Public Health, Apr 5, 2024

Melioidosis is an endemic infectious disease caused by Burkholderia pseudomallei bacteria, which ... more Melioidosis is an endemic infectious disease caused by Burkholderia pseudomallei bacteria, which contaminates soil and water. To better understand the environmental changes that have contributed to melioidosis outbreaks, this study used spatiotemporal analyses to clarify the distribution pattern of melioidosis and the relationship between melioidosis morbidity rate and local environmental indicators (land surface temperature, normalised difference vegetation index, normalised difference water index) and rainfall. A retrospective study was conducted from January 2013 to December 2022, covering data from 219 sub-districts in Northeast Thailand, with each exhibiting a varying morbidity rate of melioidosis on a monthly basis. Spatial autocorrelation was determined using local Moran’s I, and the relationship between the melioidosis morbidity rate and the environmental indicators was evaluated using a geographically weighted Poisson regression. The results revealed clustered spatiotemporal patterns of melioidosis morbidity rate across sub-districts, with hotspots predominantly observed in the northern region. Furthermore, we observed a range of coefficients for the environmental indicators, varying from negative to positive, which provided insights into their relative contributions to melioidosis in each local area and month. These findings highlight the presence of spatial heterogeneity driven by environmental indicators and underscore the importance of public health offices implementing targeted monitoring and surveillance strategies for melioidosis in different locations.

Research paper thumbnail of Mapping the probability of detecting Burkholderia pseudomallei in rural rice paddy soil based on indicator kriging and spatial soil factor analysis

Transactions of The Royal Society of Tropical Medicine and Hygiene, Jun 2, 2020

Background Melioidosis is an infectious disease commonly found in Thailand. This infectious disea... more Background Melioidosis is an infectious disease commonly found in Thailand. This infectious disease is caused by Burkholderia pseudomallei in soil. This study aims to analyze the association between spatial soil factors and B. pseudomallei detection, as well as to map the probability of B. pseudomallei contamination based on indicator kriging in paddy soil. Methods Seventy-eight soil samples were collected randomly on 22 April 2018 in various paddy fields. Oxidase, Gram staining and monoclonal antibody-based latex agglutination assays were performed to confirm the presence of B. pseudomallei in soil samples. The association between B. pseudomallei detection and spatial soil factors including soil temperature, soil pH, soil texture and soil drainage were analyzed by the Mann–Whitney U test and χ2 test. Subsequently, a semivariogram model and indicator kriging were used to map the probability of B. pseudomallei contamination. Results Of the 78 samples, B. pseudomallei was detected in 32 (41.03%). The presence or absence of B. pseudomallei was not significantly associated with spatial soil factors. The semivariogram model showed that the lag distance between positive B. pseudomallei samples was 90.51 m. Conclusion The empirical semivariogram and indicator kriging are an alternative option for predicting the spatial distribution of B. pseudomallei in soil.

Research paper thumbnail of Spatiotemporal distribution and geostatistically interpolated mapping of the melioidosis risk in an endemic zone in Thailand

Geospatial Health

Melioidosis, a bacterial, infectious disease contracted from contaminated soil or water, is a pub... more Melioidosis, a bacterial, infectious disease contracted from contaminated soil or water, is a public health problem identified in tropical regions and endemic several regions of Thailand. Surveillance and prevention are important for determining its distribution patterns and mapping its risk, which have been analysed in the present study. Case reports in Thailand were collected from 1 January 2016 to 31 December 2020. Spatial autocorrelation was analyzed using Moran’s I and univariate local Moran’s I. Spatial point data of melioidosis incidence were calculated, with riskmapping interpolation performed by Kriging. It was highest in 2016, at 32.37 cases per 100,000 people, and lowest in 2020, at 10.83 cases per 100,000 people. General observations revealed that its incidence decreased slightly from 2016 to 2018 and drastically in 2019 and 2020. The Moran’s I values for melioidosis incidence exhibited a random spatial pattern in 2016 and clustered distribution from 2017 to 2020. The ri...

Research paper thumbnail of Application of Geographic Information System for Dengue Hemorrhagic Fever Surveillance in Tangsai, Warinchamrab, Ubon Ratchathani Province in 2010

Research paper thumbnail of Aedes aegypti larval habitats and dengue vector indices in a village of Ubonratchathani province in the north-east of Thailand

Asia-Pacific Journal of Science and Technology, 2015

The objectives were to survey Aedes aegypti larval breeding habitats and analyze dengue vector in... more The objectives were to survey Aedes aegypti larval breeding habitats and analyze dengue vector indices. This larval vector survey was conducted in Dongklang village in Ubon Ratchathani province over two years in 2012 and 2013. During each year, dengue vector indices, House Index (HI), Container Index (CI), and Breteau Index (BI), were collected for two periods, dry season (January-April) and wet season (May-August). The number of households infested with larvae in the different years and periods were compared using chi-square test. The results showed in 2012, HI, CI, and BI were 52.7%, 19.9%, and 135.1% respectively in the dry season. In the wet season, the indices decreased. In 2013, dengue vector indices again tended to decrease from dry seasonal to wet seasonal periods. The numbers of households that were infested by Aedes larvae did not differ between years and seasons. Dengue vector indices are alternative methods to predict Aedes mosquito distribution and can be used in the m...

Research paper thumbnail of Perception and Behavior in Prevention of Dengue Hemorrhagic Fever in Ubon Ratchathani Province (การรับรู้และพฤติกรรมการป้องกันโรคไข้เลือดออกของประชาชน จังหวัดอุบลราชธานี)

Dengue Hemorrhagic Fever (DHF) is a major health problem in Ubon Ratchathani Province.The epidemi... more Dengue Hemorrhagic Fever (DHF) is a major health problem in Ubon Ratchathani Province.The epidemic was spurred by lack of a better understanding of local people in DHF surveillance and control. The purposes of the study included the perception of local people in DHF and the behavior of DHF surveillance. Ten villages with high incidence of DHF cases within the last 3 years (2005-2007) were selected as a study site. Data were collected in March 2008 in an interview of 383 households. The results showed high level of perception of local people in DHF among 91.10 percent of the samples. On behavior of DHF prevention, it was reportedly at a high level (50.90%).The relationship between perceptions of DHF and behavior of DHF surveillance was statistically significant (r = 0.26, p < 0.001). This result was to provide data base for prevention and control of DHF further. Key words: perception, behavior, dengue hemorrhagic fever

Research paper thumbnail of Association between Land Surface Temperature and Distribution of Burkholderia pseudomallei bacteria in Paddy Soil Using Landsat 8 Satellite Image

Burkholderia pseudomallei bacteria is found in soil and it is cause of melioidosis which is a pro... more Burkholderia pseudomallei bacteria is found in soil and it is cause of melioidosis which is a problem in Public Health. This study aimed to create a distribution map of B. pseudomallei and analyze association between the presences of B. pseudomallei with land surface temperature. The classification of paddy field was performed using Landsat 8 satellite image. Seventy-eight soil samples were collected in paddy field, while soil temperatures were detected by Handheld Measuring Instruments. The sample sites were geo-referenced by Global Positioning System (GPS). Subsequently, the land surface temperature was estimated calibration by Ordinary Co-Kriging between Landsat 8 satellite images and soil temperature field survey. The statistical association between the presences of B. pseudomallei with land surface temperature was analyzed by Mann-Whitney U Test. The Results showed that 32 sites were positive of B. pseudomallei . The land surface temperature showed that maximum and minimum were...

Research paper thumbnail of Distribution Patterns of Arsenic in Groundwater Using Spatial Autocorrelation in Rural Area at Huai Kao Sarn Watershed Ubon Rachathani Province

Arsenic is found in the natural environment as it is used in insecticides and pesticides for prot... more Arsenic is found in the natural environment as it is used in insecticides and pesticides for protection of rice. As part of this process, it has contaminated soil and groundwater, exposing people to its effects by touch, breathing, and drinking. This study aimed to assess the arsenic in groundwater and analyze the spatial distribution patterns of arsenic contamination by using spatial autocorrelation in groundwater. Groundwater data were collected from 31 wells with global positioning system (GPS). Arsenic contamination of the groundwater analyzed by Graphite Furnace Atomic Absorption. Spatial autocorrelation statistics were analyzed by Anselin Local Moran's I for the patterns of distribution of arsenic contamination. In addition, groundwater of arsenic contamination was modeled by indicator kriging method. The Results showed that 22 groundwater sources were contaminated with arsenic. The application of spatial correlation statistics with Moran's I revealed a cluster spatial...

Research paper thumbnail of Use to Promote Dengue Infection Prevention and Control

Dengue infection (DI) is a major health problem in Thailand and is especially prevalent in Ubon R... more Dengue infection (DI) is a major health problem in Thailand and is especially prevalent in Ubon Ratchathani Province. The objectives of the project were: 1) to develop a geo-database system for DI prevention and control, 2) to perform an Aedes aegypti larval vector survey for DI prevention and control in Ubon Ratchathani Province, 3) to study the behavior and perceptions regarding DI prevention among the target population in Ubon Ratchathani Province. Ten villages with high incidences of DI over a 3 year period from 2005 to 2007 were selected. The survey was divided into 2 periods, pre-outbreak period (February-April 2008) and outbreak period (June-August 2008). The data were collected in April and June 2008. The households in each village were purposively sampled. Water containers inside and outside of the houses were surveyed using the World Health Organization’s house index (HI), container index (CI), and Breteau index (BI). The location of each household was recorded using the g...

Research paper thumbnail of The Association between the Mapping Distribution of Melioidosis Incidences and Meteorological Factors in an Endemic Area: Ubon Ratchathani, Thailand (2009–2018)

Chiang Mai University Journal of Natural Sciences, 2021

Melioidosis is a public health problem in the tropical regions, occurring to meteorological varia... more Melioidosis is a public health problem in the tropical regions, occurring to meteorological variability. For 10 years of melioidosis outbreaks, we create probability maps of melioidosis distribution during 2009–2018 and determine the association with meteorological factors. The monthly average rainfall and incidence of melioidosis were high from July to September but they not significantly associated (P = 0.576). However, the monthly maximum and minimum temperature were significantly associated with melioidosis incidence (P = 0.002 and P = 0.029, respectively). We estimated the spatial distribution of rainfall and maximum and minimum temperature using the Co-Kriging interpolation method which found that the spatial distribution of the melioidosis incidence was significantly associated with rainfall in 2009, 2010, and 2015; with the maximum temperature in 2009, 2010, 2011, 2013, and 2015; and with the minimum temperature in 2010, 2011, and 2015. Our finding approach may support infor...

Research paper thumbnail of Development of GIS Database for Insecticide Usage and Toxicity among Thai Farmers in Ubon Ratchathani Province, Thailand

Applied Environmental Research, 2014

Widespread use of pesticides in Thai agriculture has led to serious adverse health impacts on use... more Widespread use of pesticides in Thai agriculture has led to serious adverse health impacts on users. This study developed a GIS database using the QGIS tool to investigate insecticide usage and toxicity tofarmers in Ubon RatchathaniProvince in northeastern Thailand. Primary data collection involved recording exact locations of residential houses using geographic positioning system (GPS). Secondary dataincluding transport routes, natural and environmental resources, and records of rainfall and ground temperatureswere also collected. The data were integrated asGIS mapping data. Eighteen farmers participated in the study and submitted themselves tomeasurements of cholinesterase (ChE) levels and 2 blood sample collections for comparison with standard ChE levels. Results revealed the GIS database to bean effective tool to capture, store, manage, search, analyze, and represent spatial data and correlate them with insecticide usage. The GIS databaserevealed that ChE levels of volunteers fo...

Research paper thumbnail of Perceptions and risky behaviors associated with Leptospirosis in an endemic area in a village of Ubon Ratchathani Province, Thailand

African Health Sciences, 2016

Background: Leptospirosis, a disease caused by Leptospira species, a spirochaete bacterium that c... more Background: Leptospirosis, a disease caused by Leptospira species, a spirochaete bacterium that can develop in an appropriate environment and/or grow in human and/or animal hosts, is a serious problem for the Ministry of Public Health, Thailand. Objective: To investigate people's perceptions and behavioral risks regarding leptospirosis infection. Methods: The cross-sectional descriptive study collected data in May, 2013. Data on individuals' perceptions and risky behaviors concerning leptospirosis were collected from 104 completed questionnaires. Results: Regarding perceptions of leptospirosis, we found them to be at a high level (97.1%) and risky behaviors regarding leptospirosis were reported at a moderate level (74.0%). The study found no correlation between perceptions and risky behaviors regarding leptospirosis (r 0.186, p-value 0.059). Conclusion: This study suggest that people in these areas have good knowledge about leptospirosis. However, some people have risky behavior associated with leptospirosis. Thus, a behavioral change campaign should be promoted to encourage people awareness of the dangers of such behavior.

Research paper thumbnail of Aedes Aegypti larval survey vector and analysis risk area for dengue hemorrhagic fever

ABSTRACT as in the original paper

Research paper thumbnail of Geo-database use to promote dengue infection prevention and control

The Southeast Asian journal of tropical medicine and public health, 2010

Dengue infection (DI) is a major health problem in Thailand and is especially prevalent in Ubon R... more Dengue infection (DI) is a major health problem in Thailand and is especially prevalent in Ubon Ratchathani Province. The objectives of the project were: (1) to develop a geo-database system for DI prevention and control, (2) to perform an Aedes aegypti larval vector survey for DI prevention and control in Ubon Ratchathani Province, (3) to study the behavior and perceptions regarding DI prevention among the target population in Ubon Ratchathani Province. Ten villages with high incidences of DI over a 3 year period from 2005 to 2007 were selected. The survey was divided into 2 periods, pre-outbreak period (February-April 2008) and outbreak period (June-August 2008). The data were collected in April and June 2008. The households in each village were purposively sampled. Water containers inside and outside of the houses were surveyed using the World Health Organization's house index (HI), container index (CI), and Breteau index (BI). The location of each household was recorded usin...

Research paper thumbnail of Perceptions and Consumption Behavior to Prevent Opisthorchiasis in Ubon Ratchathani Province (การรับรู้ และพฤติกรรมการบริโภคของประชาชน เพื่อป้องกันโรคพยาธิใบไม้ตับ จังหวัดอุบลราชธานี)

Journal of Health Science วารสารวิชาการสาธารณสุข, Sep 20, 2011

This study objective was to survey the perception and consumption behavior to prevent opisthorchi... more This study objective was to survey the perception and consumption behavior to prevent opisthorchiasis in population in Ubon Ratchathani province. Twenty-five villages with high density of population and adjacent to water resources within 1 kilometer were selected. The research data was collected from 774 families from July to August 2009. Data was analyzed using descriptive statistics (e.g., frequency, mean, SD, percentage) a nd Pearson’s product-moment correlation coefficient. The perceptions in opisthorchiasis of population were high (54.9%). Similarly, consumption behaviors of local population to prevent opisthorchiasis were high (57.7%). However, the correlation between perceptions and consumption behaviors related to opisthorchiasis was not statistically significant (r 0.059, p-value 0.145). In conclusion, the study results can be beneficial to opisthorchiasis prevention and control. Additionally, local community should be educated and gained same health promotion skills continuously in order to minimize morbidity and live a healthy life. Key words: opisthorchiasis, perception, consumption behav

Research paper thumbnail of Exploring the Relationship between Melioidosis Morbidity Rate and Local Environmental Indicators Using Remotely Sensed Data

International journal of environmental research and public health/International journal of environmental research and public health, May 13, 2024

Research paper thumbnail of Using Remote Sensing and Geographic Information Systems to Study Risk Areas of Malaria in Ubon Ratchathani Province, Thailand

Environment and Natural Resources Journal, 2008

Research paper thumbnail of Exploring the Relationship between Melioidosis Morbidity Rate and Local Environmental Indicators Using Remotely Sensed Data

Int. J. Environ. Res. Public Health, Apr 5, 2024

Melioidosis is an endemic infectious disease caused by Burkholderia pseudomallei bacteria, which ... more Melioidosis is an endemic infectious disease caused by Burkholderia pseudomallei bacteria, which contaminates soil and water. To better understand the environmental changes that have contributed to melioidosis outbreaks, this study used spatiotemporal analyses to clarify the distribution pattern of melioidosis and the relationship between melioidosis morbidity rate and local environmental indicators (land surface temperature, normalised difference vegetation index, normalised difference water index) and rainfall. A retrospective study was conducted from January 2013 to December 2022, covering data from 219 sub-districts in Northeast Thailand, with each exhibiting a varying morbidity rate of melioidosis on a monthly basis. Spatial autocorrelation was determined using local Moran’s I, and the relationship between the melioidosis morbidity rate and the environmental indicators was evaluated using a geographically weighted Poisson regression. The results revealed clustered spatiotemporal patterns of melioidosis morbidity rate across sub-districts, with hotspots predominantly observed in the northern region. Furthermore, we observed a range of coefficients for the environmental indicators, varying from negative to positive, which provided insights into their relative contributions to melioidosis in each local area and month. These findings highlight the presence of spatial heterogeneity driven by environmental indicators and underscore the importance of public health offices implementing targeted monitoring and surveillance strategies for melioidosis in different locations.

Research paper thumbnail of Mapping the probability of detecting Burkholderia pseudomallei in rural rice paddy soil based on indicator kriging and spatial soil factor analysis

Transactions of The Royal Society of Tropical Medicine and Hygiene, Jun 2, 2020

Background Melioidosis is an infectious disease commonly found in Thailand. This infectious disea... more Background Melioidosis is an infectious disease commonly found in Thailand. This infectious disease is caused by Burkholderia pseudomallei in soil. This study aims to analyze the association between spatial soil factors and B. pseudomallei detection, as well as to map the probability of B. pseudomallei contamination based on indicator kriging in paddy soil. Methods Seventy-eight soil samples were collected randomly on 22 April 2018 in various paddy fields. Oxidase, Gram staining and monoclonal antibody-based latex agglutination assays were performed to confirm the presence of B. pseudomallei in soil samples. The association between B. pseudomallei detection and spatial soil factors including soil temperature, soil pH, soil texture and soil drainage were analyzed by the Mann–Whitney U test and χ2 test. Subsequently, a semivariogram model and indicator kriging were used to map the probability of B. pseudomallei contamination. Results Of the 78 samples, B. pseudomallei was detected in 32 (41.03%). The presence or absence of B. pseudomallei was not significantly associated with spatial soil factors. The semivariogram model showed that the lag distance between positive B. pseudomallei samples was 90.51 m. Conclusion The empirical semivariogram and indicator kriging are an alternative option for predicting the spatial distribution of B. pseudomallei in soil.

Research paper thumbnail of Spatiotemporal distribution and geostatistically interpolated mapping of the melioidosis risk in an endemic zone in Thailand

Geospatial Health

Melioidosis, a bacterial, infectious disease contracted from contaminated soil or water, is a pub... more Melioidosis, a bacterial, infectious disease contracted from contaminated soil or water, is a public health problem identified in tropical regions and endemic several regions of Thailand. Surveillance and prevention are important for determining its distribution patterns and mapping its risk, which have been analysed in the present study. Case reports in Thailand were collected from 1 January 2016 to 31 December 2020. Spatial autocorrelation was analyzed using Moran’s I and univariate local Moran’s I. Spatial point data of melioidosis incidence were calculated, with riskmapping interpolation performed by Kriging. It was highest in 2016, at 32.37 cases per 100,000 people, and lowest in 2020, at 10.83 cases per 100,000 people. General observations revealed that its incidence decreased slightly from 2016 to 2018 and drastically in 2019 and 2020. The Moran’s I values for melioidosis incidence exhibited a random spatial pattern in 2016 and clustered distribution from 2017 to 2020. The ri...

Research paper thumbnail of Application of Geographic Information System for Dengue Hemorrhagic Fever Surveillance in Tangsai, Warinchamrab, Ubon Ratchathani Province in 2010

Research paper thumbnail of Aedes aegypti larval habitats and dengue vector indices in a village of Ubonratchathani province in the north-east of Thailand

Asia-Pacific Journal of Science and Technology, 2015

The objectives were to survey Aedes aegypti larval breeding habitats and analyze dengue vector in... more The objectives were to survey Aedes aegypti larval breeding habitats and analyze dengue vector indices. This larval vector survey was conducted in Dongklang village in Ubon Ratchathani province over two years in 2012 and 2013. During each year, dengue vector indices, House Index (HI), Container Index (CI), and Breteau Index (BI), were collected for two periods, dry season (January-April) and wet season (May-August). The number of households infested with larvae in the different years and periods were compared using chi-square test. The results showed in 2012, HI, CI, and BI were 52.7%, 19.9%, and 135.1% respectively in the dry season. In the wet season, the indices decreased. In 2013, dengue vector indices again tended to decrease from dry seasonal to wet seasonal periods. The numbers of households that were infested by Aedes larvae did not differ between years and seasons. Dengue vector indices are alternative methods to predict Aedes mosquito distribution and can be used in the m...

Research paper thumbnail of Perception and Behavior in Prevention of Dengue Hemorrhagic Fever in Ubon Ratchathani Province (การรับรู้และพฤติกรรมการป้องกันโรคไข้เลือดออกของประชาชน จังหวัดอุบลราชธานี)

Dengue Hemorrhagic Fever (DHF) is a major health problem in Ubon Ratchathani Province.The epidemi... more Dengue Hemorrhagic Fever (DHF) is a major health problem in Ubon Ratchathani Province.The epidemic was spurred by lack of a better understanding of local people in DHF surveillance and control. The purposes of the study included the perception of local people in DHF and the behavior of DHF surveillance. Ten villages with high incidence of DHF cases within the last 3 years (2005-2007) were selected as a study site. Data were collected in March 2008 in an interview of 383 households. The results showed high level of perception of local people in DHF among 91.10 percent of the samples. On behavior of DHF prevention, it was reportedly at a high level (50.90%).The relationship between perceptions of DHF and behavior of DHF surveillance was statistically significant (r = 0.26, p < 0.001). This result was to provide data base for prevention and control of DHF further. Key words: perception, behavior, dengue hemorrhagic fever

Research paper thumbnail of Association between Land Surface Temperature and Distribution of Burkholderia pseudomallei bacteria in Paddy Soil Using Landsat 8 Satellite Image

Burkholderia pseudomallei bacteria is found in soil and it is cause of melioidosis which is a pro... more Burkholderia pseudomallei bacteria is found in soil and it is cause of melioidosis which is a problem in Public Health. This study aimed to create a distribution map of B. pseudomallei and analyze association between the presences of B. pseudomallei with land surface temperature. The classification of paddy field was performed using Landsat 8 satellite image. Seventy-eight soil samples were collected in paddy field, while soil temperatures were detected by Handheld Measuring Instruments. The sample sites were geo-referenced by Global Positioning System (GPS). Subsequently, the land surface temperature was estimated calibration by Ordinary Co-Kriging between Landsat 8 satellite images and soil temperature field survey. The statistical association between the presences of B. pseudomallei with land surface temperature was analyzed by Mann-Whitney U Test. The Results showed that 32 sites were positive of B. pseudomallei . The land surface temperature showed that maximum and minimum were...

Research paper thumbnail of Distribution Patterns of Arsenic in Groundwater Using Spatial Autocorrelation in Rural Area at Huai Kao Sarn Watershed Ubon Rachathani Province

Arsenic is found in the natural environment as it is used in insecticides and pesticides for prot... more Arsenic is found in the natural environment as it is used in insecticides and pesticides for protection of rice. As part of this process, it has contaminated soil and groundwater, exposing people to its effects by touch, breathing, and drinking. This study aimed to assess the arsenic in groundwater and analyze the spatial distribution patterns of arsenic contamination by using spatial autocorrelation in groundwater. Groundwater data were collected from 31 wells with global positioning system (GPS). Arsenic contamination of the groundwater analyzed by Graphite Furnace Atomic Absorption. Spatial autocorrelation statistics were analyzed by Anselin Local Moran's I for the patterns of distribution of arsenic contamination. In addition, groundwater of arsenic contamination was modeled by indicator kriging method. The Results showed that 22 groundwater sources were contaminated with arsenic. The application of spatial correlation statistics with Moran's I revealed a cluster spatial...

Research paper thumbnail of Use to Promote Dengue Infection Prevention and Control

Dengue infection (DI) is a major health problem in Thailand and is especially prevalent in Ubon R... more Dengue infection (DI) is a major health problem in Thailand and is especially prevalent in Ubon Ratchathani Province. The objectives of the project were: 1) to develop a geo-database system for DI prevention and control, 2) to perform an Aedes aegypti larval vector survey for DI prevention and control in Ubon Ratchathani Province, 3) to study the behavior and perceptions regarding DI prevention among the target population in Ubon Ratchathani Province. Ten villages with high incidences of DI over a 3 year period from 2005 to 2007 were selected. The survey was divided into 2 periods, pre-outbreak period (February-April 2008) and outbreak period (June-August 2008). The data were collected in April and June 2008. The households in each village were purposively sampled. Water containers inside and outside of the houses were surveyed using the World Health Organization’s house index (HI), container index (CI), and Breteau index (BI). The location of each household was recorded using the g...

Research paper thumbnail of The Association between the Mapping Distribution of Melioidosis Incidences and Meteorological Factors in an Endemic Area: Ubon Ratchathani, Thailand (2009–2018)

Chiang Mai University Journal of Natural Sciences, 2021

Melioidosis is a public health problem in the tropical regions, occurring to meteorological varia... more Melioidosis is a public health problem in the tropical regions, occurring to meteorological variability. For 10 years of melioidosis outbreaks, we create probability maps of melioidosis distribution during 2009–2018 and determine the association with meteorological factors. The monthly average rainfall and incidence of melioidosis were high from July to September but they not significantly associated (P = 0.576). However, the monthly maximum and minimum temperature were significantly associated with melioidosis incidence (P = 0.002 and P = 0.029, respectively). We estimated the spatial distribution of rainfall and maximum and minimum temperature using the Co-Kriging interpolation method which found that the spatial distribution of the melioidosis incidence was significantly associated with rainfall in 2009, 2010, and 2015; with the maximum temperature in 2009, 2010, 2011, 2013, and 2015; and with the minimum temperature in 2010, 2011, and 2015. Our finding approach may support infor...

Research paper thumbnail of Development of GIS Database for Insecticide Usage and Toxicity among Thai Farmers in Ubon Ratchathani Province, Thailand

Applied Environmental Research, 2014

Widespread use of pesticides in Thai agriculture has led to serious adverse health impacts on use... more Widespread use of pesticides in Thai agriculture has led to serious adverse health impacts on users. This study developed a GIS database using the QGIS tool to investigate insecticide usage and toxicity tofarmers in Ubon RatchathaniProvince in northeastern Thailand. Primary data collection involved recording exact locations of residential houses using geographic positioning system (GPS). Secondary dataincluding transport routes, natural and environmental resources, and records of rainfall and ground temperatureswere also collected. The data were integrated asGIS mapping data. Eighteen farmers participated in the study and submitted themselves tomeasurements of cholinesterase (ChE) levels and 2 blood sample collections for comparison with standard ChE levels. Results revealed the GIS database to bean effective tool to capture, store, manage, search, analyze, and represent spatial data and correlate them with insecticide usage. The GIS databaserevealed that ChE levels of volunteers fo...

Research paper thumbnail of Perceptions and risky behaviors associated with Leptospirosis in an endemic area in a village of Ubon Ratchathani Province, Thailand

African Health Sciences, 2016

Background: Leptospirosis, a disease caused by Leptospira species, a spirochaete bacterium that c... more Background: Leptospirosis, a disease caused by Leptospira species, a spirochaete bacterium that can develop in an appropriate environment and/or grow in human and/or animal hosts, is a serious problem for the Ministry of Public Health, Thailand. Objective: To investigate people's perceptions and behavioral risks regarding leptospirosis infection. Methods: The cross-sectional descriptive study collected data in May, 2013. Data on individuals' perceptions and risky behaviors concerning leptospirosis were collected from 104 completed questionnaires. Results: Regarding perceptions of leptospirosis, we found them to be at a high level (97.1%) and risky behaviors regarding leptospirosis were reported at a moderate level (74.0%). The study found no correlation between perceptions and risky behaviors regarding leptospirosis (r 0.186, p-value 0.059). Conclusion: This study suggest that people in these areas have good knowledge about leptospirosis. However, some people have risky behavior associated with leptospirosis. Thus, a behavioral change campaign should be promoted to encourage people awareness of the dangers of such behavior.

Research paper thumbnail of Aedes Aegypti larval survey vector and analysis risk area for dengue hemorrhagic fever

ABSTRACT as in the original paper

Research paper thumbnail of Geo-database use to promote dengue infection prevention and control

The Southeast Asian journal of tropical medicine and public health, 2010

Dengue infection (DI) is a major health problem in Thailand and is especially prevalent in Ubon R... more Dengue infection (DI) is a major health problem in Thailand and is especially prevalent in Ubon Ratchathani Province. The objectives of the project were: (1) to develop a geo-database system for DI prevention and control, (2) to perform an Aedes aegypti larval vector survey for DI prevention and control in Ubon Ratchathani Province, (3) to study the behavior and perceptions regarding DI prevention among the target population in Ubon Ratchathani Province. Ten villages with high incidences of DI over a 3 year period from 2005 to 2007 were selected. The survey was divided into 2 periods, pre-outbreak period (February-April 2008) and outbreak period (June-August 2008). The data were collected in April and June 2008. The households in each village were purposively sampled. Water containers inside and outside of the houses were surveyed using the World Health Organization's house index (HI), container index (CI), and Breteau index (BI). The location of each household was recorded usin...

Research paper thumbnail of Perceptions and Consumption Behavior to Prevent Opisthorchiasis in Ubon Ratchathani Province (การรับรู้ และพฤติกรรมการบริโภคของประชาชน เพื่อป้องกันโรคพยาธิใบไม้ตับ จังหวัดอุบลราชธานี)

Journal of Health Science วารสารวิชาการสาธารณสุข, Sep 20, 2011

This study objective was to survey the perception and consumption behavior to prevent opisthorchi... more This study objective was to survey the perception and consumption behavior to prevent opisthorchiasis in population in Ubon Ratchathani province. Twenty-five villages with high density of population and adjacent to water resources within 1 kilometer were selected. The research data was collected from 774 families from July to August 2009. Data was analyzed using descriptive statistics (e.g., frequency, mean, SD, percentage) a nd Pearson’s product-moment correlation coefficient. The perceptions in opisthorchiasis of population were high (54.9%). Similarly, consumption behaviors of local population to prevent opisthorchiasis were high (57.7%). However, the correlation between perceptions and consumption behaviors related to opisthorchiasis was not statistically significant (r 0.059, p-value 0.145). In conclusion, the study results can be beneficial to opisthorchiasis prevention and control. Additionally, local community should be educated and gained same health promotion skills continuously in order to minimize morbidity and live a healthy life. Key words: opisthorchiasis, perception, consumption behav