ArticleParasites & vectors2024
Impact of climate change on temperature variations and extrinsic incubation period of malaria parasites in Chennai, India: implications for its disease transmission potential.
Article in Parasites & vectors, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed.
- Climatic drivers of the 2024 malaria outbreak in two neighbouring districts in northeastern India and its corridor: The indirect role of El Niño.One health (Amsterdam, Netherlands) · 2026Article
- Hydroxamic Acids as HDAC Inhibitor Drug Leads for Malaria.Medicinal research reviews · 2026Review
- Assessing the impact of climate and control interventions on spatio-temporal malaria dynamics using a stochastic metapopulation model.PLoS computational biology · 2026Article
- Establishing and sustaining mosquito colonies: insights into morphology, bionomics, and advances in the rearing ofFrontiers in insect science · 2026Review
- Turning the tide against malaria in high-burden African countries: Trends, threats, and solutions.PLOS global public health · 2026Article
- Sociodemographic and ecological factors associated with malaria and malaria recurrence risk in children in Msambweni, Kwale County, Kenya.Malaria journal · 2025Article
- Building Momentum for a Malaria-Free India.The American journal of tropical medicine and hygiene · 2025Article
- Unveiling malaria vectors: species complex and surveillance insights from Sundergarh, Odisha, India.Tropical medicine and health · 2025Article
- Associations of temperature and precipitation with malaria in children under 5: A multi-country study in Sub-Saharan Africa.PloS one · 2025Article
- Modelling the impact of climatic and environmental variables on malaria incidence in Tanzania: Implications for achieving the WHO's 2030 Targets.PLOS global public health · 2025Article
- A study on the effectiveness of (+)-usnic acid as oral toxic sugar bait against adult male and female Anopheles gambiae.Malaria journal · 2024Article
- Stable introduction of Wolbachia wPip into invasive Anopheles stephensi for potential malaria control.PLoS neglected tropical diseases · 2024Article
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6 authors.
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Abstract
backgroundThe global temperature has significantly risen in the past century. Studies have indicated that higher temperature intensifies malaria transmission in tropical and temperate countries. Temperature fluctuations will have a potential impact on parasite development in the vector Anopheles mosquito.
methodsYear-long microclimate temperatures were recorded from a malaria-endemic area, Chennai, India, from September 2021 to August 2022. HOBO data loggers were placed in different vector resting sites including indoor and outdoor roof types. Downloaded temperatures were categorised by season, and the mean temperature was compared with data from the same study area recorded from November 2012 to October 2013. The extrinsic incubation period for Plasmodium falciparum and P. vivax was calculated from longitudinal temperatures recorded during both periods. Vector surveillance was also carried out in the area during the summer season.
resultsIn general, temperature and daily temperature range (DTR) have increased significantly compared to the 2012-2013 data, especially the DTR of indoor asbestos structures, from 4.30 ℃ to 12.62 ℃ in 2021-2022, unlike the marginal increase observed in thatched and concrete structures. Likewise, the average DTR of outdoor asbestos structures increased from 5.02 ℃ (2012-2013) to 8.76 ℃ (2021-2022) although the increase was marginal in thatched structures and, surprisingly, showed no such changes in concrete structures. The key finding of the extrinsic incubation period (EIP) is that a decreasing trend was observed in 2021-2022 compared to 2012-2013, mainly in indoor asbestos structures from 7.01 to 6.35 days, which negatively correlated with the current observation of an increase in temperature. Vector surveillance undertaken in the summer season revealed the presence of Anopheles breeding in various habitats. Anopheles stephensi could be collected using CDC light traps along with other mosquito species.
conclusionThe microclimate temperature has increased significantly over the years, and mosquitoes are gradually adapting to this rising temperature. Temperature negatively correlates with the extrinsic incubation period of the parasite. As the temperature increases, the development of the parasite in An. stephensi will be faster because of a decrease in EIP, thus requiring relatively fewer days, posing a risk for disease transmission and a hindrance to malaria elimination efforts.
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