Abstract
Vector borne diseases are a threat to human health. Little attention has been paid to the prevention of these diseases. We attempted to identify the significant wetland characteristics associated with the spread of chikungunya, dengue fever and malaria in Kerala, a tropical region of South West India using multivariate analyses (hierarchical cluster analysis, factor analysis and multiple regression). High/medium turbid coastal lagoons and inland water-logged wetlands with aquatic vegetation have significant effect on the incidence of chikungunya while dengue influenced by high turbid coastal beaches and malaria by medium turbid coastal beaches. The high turbidity in water is due to the urban waste discharge namely sewage, sullage and garbage from the densely populated cities and towns. The large extent of wetland is low land area favours the occurrence of vector borne diseases. Hence the provision of pollution control measures at source including soil erosion control measures is vital. The identification of vulnerable zones favouring the vector borne diseases will help the authorities to control pollution especially from urban areas and prevent these vector borne diseases. Future research should cover land use cover changes, climatic factors, seasonal variations in weather and pollution factors favouring the occurrence of vector borne diseases.
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Acknowledgments
We are grateful to Directorate of Health Sciences, Thiruvananthapuram, Kerala State Remote Sensing Agency, Thiruvananthapuram, and Centre for Geoinformatics, Science and Technology, University of Kerala, Thiruvananthapuram for their support in the study.
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Sheela, A.M., Sarun, S., Justus, J. et al. Assessment of changes of vector borne diseases with wetland characteristics using multivariate analysis. Environ Geochem Health 37, 391–410 (2015). https://doi.org/10.1007/s10653-014-9655-y
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DOI: https://doi.org/10.1007/s10653-014-9655-y