ArticleBMC public health2022
Reduced dengue incidence during the COVID-19 movement restrictions in Sri Lanka from March 2020 to April 2021.
Article in BMC public health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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27 citing papers in PubMed.
- Machine learning reveals temperature as a key predictor of dengue risk across Thailand's provinces: A 20-year analysis.PLoS neglected tropical diseases · 2026Article
- Association of Climatic Factors with Frequency of Dengue.Infectious disease reports · 2026Article
- Investigating genetic differentiation between brackish and fresh water collections of the arboviral vector Aedes aegypti.Parasites & vectors · 2026Article
- Lessons and concerns about the SARS-CoV-2/DENV co-infection.BMC infectious diseases · 2025Article
- Spatial occurrence-intensity modeling of dengue incidence in southernmost provinces of Thailand.PLoS neglected tropical diseases · 2025Article
- A State-of-the-Science Review of Long-Term Predictions of Climate Change Impacts on Dengue Transmission Risk.Environmental health perspectives · 2025Review
- Unraveling varying spatiotemporal patterns of Dengue Fever and associated exposure-response relationships with environmental variables in three Southeast Asian countries before and during COVID-19.PLoS neglected tropical diseases · 2025Article
- Assessing AedesTech mosquito home system on yellow fever mosquito Aedes aegypti (Linnaeus) in Northern Malaysia.Journal of insect science (Online) · 2025Article
- Temporal shifts in dengue epidemic in Guangdong Province before and during the COVID-19 pandemic: a Bayesian model study from 2012 to 2022.PLoS neglected tropical diseases · 2025Article
- Epidemiological burden of dengue in Sri Lanka: A systematic review of literature from 2000-2020.IJID regions · 2024Review
- Evaluation of high school-based dengue solution model in Southern Thailand: a community participatory action research.BMC public health · 2024Article
- Report of the 2023 Asia Pacific Conference on Mosquito and Vector Control: "reimagining vector control-innovations for a changed world".Malaria journal · 2024Article
- Dengue fever coinfection in COVID-19 era: A public health concern.Health science reports · 2024Article
- Mass immunisation to eradicate Japanese encephalitis: Real-world evidence from Guizhou Province in 2005-2021.Journal of virus eradication · 2024Article
- Sri Lanka's COVID-19 response and maintaining health services: implications for future pandemics.BMJ global health · 2024Article
- Breeding Habitat Preference of the Dengue Vector MosquitoesJournal of tropical medicine · 2024Article
- Article
- Resistance to the larvicide temephos and altered egg and larval surfaces characterize salinity-tolerant Aedes aegypti.Scientific reports · 2023Article
- The Impact of COVID-19 Pandemic on Arthropod-Related Diseases.Journal of arthropod-borne diseases · 2023Review
- Dengue seroprevalence study in Bali.PloS one · 2023Article
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9 authors.
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Abstract
backgroundDengue is the major mosquito-borne disease in Sri Lanka. After its first detection in January 2020, COVID-19 has become the major health issue in Sri Lanka. The impact of public health measures, notably restrictions on movement of people to curb COVID-19 transmission, on the incidence of dengue during the period March 2020 to April 2021 was investigated.
methodsThe incidence of dengue and COVID-19, rainfall and the public movement restrictions implemented to contain COVID-19 transmission were obtained from Sri Lanka government sources. A Seasonal Autoregressive Integrated Moving Average (SARIMA) model was used to predict the monthly dengue incidence from March 2020 to April 2021 for each of the country's 25 districts based on five years of pre-pandemic data, and compared with the actual recorded incidence of dengue during this period. Ovitrap collections of Aedes larvae were performed in Jaffna city in the Jaffna district from August 2020 to April 2021 and the findings compared with similar collections made in the pre-pandemic period from March 2019 to December 2019.
resultsThe recorded numbers of dengue cases for every month from March 2020 to April 2021 in the whole country and for all 25 districts over the same period were lower than the numbers of dengue cases predicted from data for the five years (2015-2019) immediately preceding the COVID-19 pandemic. The number of dengue cases recorded nationwide represented a 74% reduction from the predicted number of dengue cases for the March 2020 to April 2021 period. The numbers of Aedes larvae collected from ovitraps per month were reduced by 88.6% with a lower proportion of Ae. aegypti than Ae. albopictus in Jaffna city from August 2020 until April 2021 compared with March 2019 to December 2019.
conclusionPublic health measures that restricted movement of people, closed schools, universities and offices to contain COVID-19 transmission unexpectedly led to a significant reduction in the reported numbers of dengue cases in Sri Lanka. This contrasts with findings reported from Singapore. The differences between the two tropical islands have significant implications for the epidemiology of dengue. Reduced access to blood meals and lower vector densities, particularly of Ae. aegypti, resulting from the restrictions on movement of people, are suggested to have contributed to the lower dengue incidence in Sri Lanka.
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