A5037591274- Mosquito-borne diseases and control
- Viral Infections and Vectors
- Malaria Research and Control
- COVID-19 epidemiological studies
- Spatial and Panel Data Analysis
- Urban Transport and Accessibility
- Radioactivity and Radon Measurements
- Radioactive contamination and transfer
- Data-Driven Disease Surveillance
- Dengue and Mosquito Control Research
- Obesity, Physical Activity, Diet
- Health disparities and outcomes
- Economic and Environmental Valuation
- Land Use and Ecosystem Services
- Nuclear and radioactivity studies
- Antibiotic Resistance in Bacteria
- Climate change impacts on agriculture
- Pharmaceutical and Antibiotic Environmental Impacts
- Animal Vocal Communication and Behavior
- Bat Biology and Ecology Studies
- Mathematical and Theoretical Epidemiology and Ecology Models
- Acute Ischemic Stroke Management
- Health Policy Implementation Science
- Antibiotic Use and Resistance
- Advanced Proteomics Techniques and Applications
University at Buffalo, State University of New York
2015-2025
New York University
2023
Oxford University Press (United Kingdom)
2020
Buffalo State University
2013
San Diego State University
2006-2008
Armed Forces Research Institute of Medical Science
2008
University of California, Santa Barbara
2006
Neighborhood walkability can influence physical activity. We evaluated the validity of Walk Score® for assessing neighborhood based on GIS (objective) indicators with addresses from four US metropolitan areas several street network buffer distances (i.e., 400-, 800-, and 1,600-meters). Address data come YMCA-Harvard After School Food Fitness Project, an obesity prevention intervention involving children aged 5–11 years their families participating in YMCA-administered, after-school programs...
Spatial weights matrices are necessary elements in most regression models where a representation of spatial structure is needed. We construct matrix, W , based on the principle that should be considered two‐part framework, those units evoke distance effect, and do not. Our two‐variable local statistics model (LSM) G i * statistic. The statistic concept depends designation critical distance, d c defined as beyond which no discernible increase clustering high or low values exists. In series...
Spatial weights matrices are necessary elements in most regression models where a representation of spatial structure is needed. We construct matrix, W, based on the principle that should be considered two-part framework, those units evoke distance effect, and do not. Our two-variable local statistics model (LSM) Gi* statistic. The statistic concept depends designation critical distance, dc, defined as beyond which no discernible increase clustering high or low values exists. In series...
Transmission of dengue viruses (DENV), the leading cause arboviral disease worldwide, is known to vary through time and space, likely owing a combination factors related human host, virus, mosquito vector, environment. An improved understanding variation in transmission patterns fundamental conducting surveillance implementing prevention strategies. To test hypothesis that DENV spatially temporally focal, we compared geographic temporal characteristics within Thai villages where are not...
The creation of a spatial weights matrix by procedure called AMOEBA, A Multidirectional Optimum Ecotope‐Based Algorithm , is dependent on the use local autocorrelation statistic. result (1) vector that identifies those units are related and unrelated to contiguous (2) whose values function relationship ith unit with all other nearby for which there association. In addition, AMOEBA aids in demarcation clusters, ecotopes, units. Experimentation reveals an effective tool identification...
Background Based on spatiotemporal clustering of human dengue virus (DENV) infections, transmission is thought to occur at fine scales by horizontal transfer between humans and mosquito vectors. To define the dimensions local quantify factors that support it, we examined relationships infected Aedes aegypti in Thai villages. Methodology/Principal Findings Geographic cluster investigations 100-meter radius were conducted around DENV-positive DENV-negative febrile "index" cases (positive...
Measurements of neighborhood exposures likely vary depending on the definition “neighborhood” selected. This study examined extent to which influences findings regarding spatial accessibility tobacco retailers among youth. We defined (i.e., retail density, closest retailer, and average distance 5 retailers) basis circular network buffers 400 m 800 m, census block groups, tracts by using residential addresses from 2008 Boston Youth Survey Geospatial Dataset (n = 1,292). Friedman tests (to...
Background. The understanding of dengue virus (DENV) transmission dynamics and the clinical spectrum infection are critical to informing surveillance control measures. Geographic cluster studies can elucidate these features in greater detail than cohort alone. Methods. A 4-year longitudinal geographic study was undertaken rural Thailand. Cohort children underwent pre-/postseason serology active school absence–based detect inapparent symptomatic dengue. Cluster investigations were triggered...
Built environment features of neighborhoods may be related to obesity among adolescents and potentially obesity-related health disparities. The purpose this study was investigate spatial relationships between various built body mass index (BMI) z-score adolescents, if race/ethnicity modifies these relationships. A secondary objective evaluate the sensitivity findings scale analysis (i.e. 400- 800-meter street network buffers).
Background Long-term homologous and temporary heterologous protection from dengue virus (DENV) infection may be mediated by neutralizing antibodies. However, antibody titers (NTs) have not been clearly associated with infection. Methodology/Principal Findings Data two geographic cluster studies conducted in Kamphaeng Phet, Thailand were used for this analysis. In the first study (2004–2007), investigations of 100-meter radius triggered DENV-infected index cases a concurrent prospective...
Multiple and varied benefits have been suggested for increased neighborhood walkability. However, spatial inequalities in walkability likely exist may be attributable, part, to residential segregation.
Abstract Objective To determine the temporal intervals at which spatial clustering of dengue hospitalisations occurs. Methods Space‐time analysis 262 people hospitalised and serologically confirmed with virus infections in Kamphaeng Phet, Thailand was performed. The cases were observed between 1 January 2009 6 May 2011. Spatial coordinates each patient’s home captured using Global Positioning System. A novel method based on Knox test used to occurred. These are indicative length time...
We investigated how temporal and spatial effects confound the functional relationship between pupal adult populations of Aedes aegypti thus value numbers as predictors dengue transmission risk in Kamphaeng Phet, Thailand. found considerable seasonal shifts productivity key containers. Tires contained much less pupae dry season than wet season. Earthenware jars cement tanks for washing purposes were consistent producers over entire study period. Houses two villages, with approximately twice...
Spatially explicit agent-based models (ABMs) have been widely utilized to simulate the dynamics of spatial processes that involve interactions individual agents. The assumptions embedded in ABMs may be responsible for uncertainty model outcomes. To ensure reliability outcomes terms their space-time patterns, validation should performed. In this paper, we propose use multiple scale spatio-temporal patterns validating spatially ABMs. We evaluated several specifications vector-borne disease...
Aedes aegypti (L.) is the primary vector of dengue, most important arboviral infection globally. Until an effective vaccine licensed and rigorously administered, Ae. control remains principal tool in preventing curtailing dengue transmission. Accurate predictions populations are required to assess methods develop population reduction strategies. develops primarily artificial water holding containers. Release recapture studies indicate that adult do not disperse over long distances. We...
Revealing the patterns and determinants of spread dengue virus (DENV) at local scales is central to understanding epidemiology evolution this major human pathogen. We performed a phylogenetic analysis envelope (E) genes DENV-1, -2, -3, -4 isolates (involving 97, 23, 5, 74 newly collected sequences, respectively) sampled from school-based cohort village-based cluster studies in Kamphaeng Phet, Thailand, between 2004 2007. With these data, we sought describe spatial temporal DENV within rural...
A four-year longitudinal cohort and geographic cluster study in rural Thailand was conducted to characterize the clinical spectrum of dengue virus (DENV) infection. Symptomatic DENV infections were detected by active school absence-based surveillance that triggered investigations around ill children. Data from 189 children with symptomatic infection 126 contact clusters analyzed. Of infected contacts, only 19% asymptomatic; 81% symptomatic, but 65.9% reported fever. Symptom-based case...
The racial/ethnic and income composition of neighborhoods often influences local amenities, including the potential spatial distribution trees, which are important for population health community wellbeing, particularly in urban areas. This ecological study used analytical methods to assess relationship between neighborhood socio-demographic characteristics (i.e. minority poverty) tree density at census tact level Boston, Massachusetts (US). We examined autocorrelation with Global Moran's I...