Spatiotemporal patterns of dengue outbreaks in Sri Lanka

Prabodanie, R.A. Ranga; Stone, Lewi; Schreider, Sergei

doi:10.1080/23744235.2020.1725108

Cited by 9 publications

(9 citation statements)

References 31 publications

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“…Moreover, the wet zone (Odds: 6.41, 95% CI 5.49-7.50, p < 0.01) was 6.41 times more likely to be dengue infected than the dry zone. A previous study in Sri Lanka found that the wet zone and the surrounding areas contribute to the epidemic wave in the southwestern monsoon (June-August) (Prabodanie et al 2020b). A study in Puerto Rico found that the associations between climate factors and dengue infection were varied spatially (Johansson et al 2009).…”

Section: Resultsmentioning

confidence: 99%

“…The wet zone receives rainfall in all seasons, and the average annual rainfall varies from 2000 to 5000 mm. Intermediate, dry, and arid zones receive 1100-2000 mm, 700-1000 mm, and less than 700 mm annual rainfall, respectively (Prabodanie et al 2020b). In this study, the aird zone has been merged with the dry zone and considered the country into three distinct zones.…”

Section: Study Areamentioning

confidence: 99%

“…Rainfall positively impacts dengue incidence in Sri Lanka (Liyanage et al 2016a;Sirisena et al 2017). The country's two annual peaks of dengue incidence are correlated with the two monsoons season during May to September and December to February (Liyanage et al 2016a, Prabodanie et al 2020b). Consequently, western provinces possessed higher dengue cases (41% in 2017) than the eastern parts of the country (7% during the 2017 outbreak) (Lazarus 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, western provinces possessed higher dengue cases (41% in 2017) than the eastern parts of the country (7% during the 2017 outbreak) (Lazarus 2021). Sri Lanka provides a compelling location for studying the effect of climate on dengue transmission due to highly varied rainfall patterns in the island (Prabodanie et al 2020b). Moreover, dengue fever shared a few common clinical signs with COVID-19 infection which has created misdiagnosis and delay diagnosis during the pandemic .…”

Section: Introductionmentioning

confidence: 99%

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Impact of environmental factors on the spread of dengue fever in Sri Lanka

Faruk

Jannat

Rahman

2022

Int. J. Environ. Sci. Technol.

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Dengue fever is a mosquito-borne viral disease caused by the dengue virus of the Flaviviridae family and is responsible for colossal health and economic burden worldwide. This study aimed to investigate the effect of environmental, seasonal, and spatial variations on the spread of dengue fever in Sri Lanka. The study used secondary data of monthly dengue infection and the monthly average of environmental parameters of 26 Sri Lankan regions from January 2015 to December 2019. Besides the descriptive measurements, Kendall's tau_b, Spearman's rho, and Kruskal-Wallis H test have been performed as bivariate analyses. The multivariate generalized linear negative binomial regression model was applied to determine the impacts of meteorological factors on dengue transmission. The aggregate negative binomial regression model disclosed that precipitation (odds ratio: 0.97, p < 0.05), humidity (odds ratio: 1.05, p < 0.01), and air pressure (odds ratio: 1.46, p < 0.01) were significantly influenced the spread of dengue fever in Sri Lanka. The bioclimatic zone is the vital factor that substantially affects the dengue infection, and the wet zone (odds ratio: 6.41, p < 0.05) was more at-risk than the dry zone. The climate season significantly influenced dengue fever transmission, and a higher infection rate was found (odds ratio: 1.46, p < 0.01) in the northeast monsoon season. The findings of this study facilitate policymakers to improve the existing dengue control strategies focusing on the meteorological condition in the local as well as global perspectives.

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Section: Resultsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of environmental factors on the spread of dengue fever in Sri Lanka

Faruk

Jannat

Rahman

2022

Int. J. Environ. Sci. Technol.

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“…The spatial structure and the mobility of a population are critical factors for the control of any epidemic (Danon 2011 ; Heesterbeek 2015 ; Khan 2012 ; Prabodanie et al. 2020 ). In today’s world, with communities more connected than ever, the total eradication of an epidemic requires joint and coordinated efforts across different cities and countries.…”

Section: Introductionmentioning

confidence: 99%

The Role of Movement Patterns in Epidemic Models on Complex Networks

Ruiz-Herrera

Torres

2021

Bull Math Biol

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In this paper, we analyze the influence of the usual movement variables on the spread of an epidemic. Specifically, given two spatial topologies, we can deduce which topology produces less infected individuals. In particular, we determine the topology that minimizes the overall number of infected individuals. It is worth noting that we do not assume any of the common simplifying assumptions in network theory such as all the links have the same diffusion rate or the movement of the individuals is symmetric. Our main conclusion is that the degree of mobility of the population plays a critical role in the spread of a disease. Finally, we derive theoretical insights to management of epidemics.

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