ArticlePloS one2020
Assessment of environmental variability on malaria transmission in a malaria-endemic rural dry zone locality of Sri Lanka: The wavelet approach.
Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- Modelling the impact of climate variability on malaria morbidity in the Tamale Metropolitan Area: a time series analysis.BMC infectious diseases · 2026Article
- Assessing the role of interventions and climate on malaria mortality among children under five years of age: insights from two decades of data from the Health Demographic Surveillance System of Nouna, Burkina Faso.Journal of global health · 2026Article
- Article
- Trend analysis and spatiotemporal distribution of leishmaniasis disease incidence in Sri Lanka: A detailed review from 2009 to 2023.PLoS neglected tropical diseases · 2025Review
- Impact of Global Climate-Change on Ecology ofIranian journal of public health · 2025Review
- Impact of Climate Variability and Interventions on Malaria Incidence and Forecasting in Burkina Faso.International journal of environmental research and public health · 2024Article
- Assessing the impact of ecological, climatic, and socioeconomic factors on age-specific malaria incidence in India: a mixed-model approach using the Global Burden of Disease Study (2010-2019).Malaria journal · 2024Article
- Living Conditions and Malaria: A Longitudinal Study in a Rural Malaria-Endemic Area of Sri Lanka.The American journal of tropical medicine and hygiene · 2024Article
- Disentangling the seasonality effects of malaria transmission in the Brazilian Amazon basin.Royal Society open science · 2024Article
- The changing relationship between Cholera and interannual climate variables in Kolkata over the past century.Gut pathogens · 2023Article
- Contextualizing Public Health Interventions in Eliminating Endemic Diseases: New Lessons From a Review of Sri Lanka's Success in Eliminating Malaria.Inquiry : a journal of medical care organization, provision and financingReview
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5 authors.
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Abstract
Malaria is a global public health concern and its dynamic transmission is still a complex process. Malaria transmission largely depends on various factors, including demography, geography, vector dynamics, parasite reservoir, and climate. The dynamic behaviour of malaria transmission has been explained using various statistical and mathematical methods. Of them, wavelet analysis is a powerful mathematical technique used in analysing rapidly changing time-series to understand disease processes in a more holistic way. The current study is aimed at identifying the pattern of malaria transmission and its variability with environmental factors in Kataragama, a malaria-endemic dry zone locality of Sri Lanka, using a wavelet approach. Monthly environmental data including total rainfall and mean water flow of the "Menik Ganga" river; mean temperature, mean minimum and maximum temperatures and mean relative humidity; and malaria cases in the Kataragama Medical Officer of Health (MOH) area were obtained from the Department of Irrigation, Department of Meteorology and Malaria Research Unit (MRU) of University of Colombo, respectively, for the period 1990 to 2005. Wavelet theory was applied to analyze these monthly time series data. There were two significant periodicities in malaria cases during the period of 1992-1995 and 1999-2000. The cross-wavelet power spectrums revealed an anti-phase correlation of malaria cases with mean temperature, minimum temperature, and water flow of "Menik Ganga" river during the period 1991-1995, while the in-phase correlation with rainfall is noticeable only during 1991-1992. Relative humidity was similarly associated with malaria cases between 1991-1992. It appears that environmental variables have contributed to a higher incidence of malaria cases in Kataragama in different time periods between 1990 and 2005.
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