Spatial Distribution and Cluster Analysis of Dengue In Tamil Nadu, India 2017 – 2019

Senthil Kumar Sundaram; Thirunaaukarasu D; Tejas J; Somasundaram A; Sampath P

doi:10.55489/njcm.141220233486

Authors

Senthil Kumar Sundaram Karpaga Vinayaga Institute of Medical Sciences & Research Institute, Madhurantakam, India
Thirunaaukarasu D Karpaga Vinayaga Institute of Medical Sciences & Research Institute, Madhurantakam, India
Tejas J Karpaga Vinayaga Institute of Medical Sciences & Research Institute, Madhurantakam, India
Somasundaram A O/o Directorate of Public Health & Preventive Medicine, DMS Campus, Teynampet, Chennai, India
Sampath P O/o Directorate of Public Health & Preventive Medicine, DMS Campus, Teynampet, Chennai, India

DOI:

https://doi.org/10.55489/njcm.141220233486

Keywords:

Dengue, GIS, Spatial Distribution, SOM, Tamil Nadu

Abstract

Background: Dengue, a viral infectious disease, is constantly reemerging and is spread by mosquitoes. It is most common in tropical and subtropical areas of the world, particularly in the Asia-Pacific region. A Surveillance study was carried out in the state of Tamil Nadu-India, from 2017 to 2019 to better understand the epidemiology and geographic spread of dengue.

Materials & Methods: Geographical information system (GIS) software was used to map the district-wise endemicity. To pinpoint dengue hotspots and coldspots, spatial statistical analysis techniques like Getis-Ord Gi* were used. To comprehend the endemicity and clustering patterns in the state, self-organising maps (SOM)was also used.

Results: Dengue hotspots are Chennai, Thiruvallur, Kancheepuram and cold spots are Cuddalore and Ariyalur for across three years. The SOM divides 30 districts into six clusters. The 10 districts are identified as extremely high endemic cluster and 9 districts as very high endemic cluster. These SOM clusters were projected geographically, and the districts were divided based on the intensity of the cases.

Conclusion: SOM-GIS, a visualization technique, identifies hot spots and endemic clusters which helps in prompt decision-making for disease management by public health personnel.

References

Dengue and severe dengue [Internet]. [cited 2023 Aug 31]. Available from: https://www.who.int/news-room/fact-sheets/detail/dengue-and-severe-dengue

CDC. About Dengue| CDC [Internet]. Centers for Disease Control and Prevention. 2023 [cited 2023 Aug 31]. Available from: https://www.cdc.gov/dengue/about/index.html

CDC. Dengue Areas of Risk Around the World | CDC [Internet]. Centers for Disease Control and Prevention. 2023 [cited 2023 Aug 31]. Available from: https://www.cdc.gov/dengue/areaswithrisk/around-the-world.html

VECTOR OF DENGUE/DENGUE HAEMORRHAGIC FEVER :: National Center for Vector Borne Diseases Control (NCVBDC) [Inter-net]. [cited 2023 Aug 31]. Available from: https://ncvbdc.mohfw.gov.in/index4.php?lang=1&level=0&linkid=449&lid=3719

Guidelines :: National Center for Vector Borne Diseases Control (NCVBDC) [Internet]. [cited 2023 Aug 31]. Available from: https://ncvbdc.mohfw.gov.in/index1.php?lang=1&level=1&sublinkid=5899&lid=3686

Chandran R, Azeez PA. Outbreak of dengue in Tamil Nadu, India. CURRENT SCIENCE. 2015;109(1).

Victor TJ, Malathi M, Asokan R, Padmanaban P. Laboratory-based dengue fever surveillance in Tamil Nadu, India. Indian J Med Res. 2007 Aug;126(2):112-5.

Mutheneni SR, Mopuri R, Naish S, Gunti D, Upadhyayula SM. Spatial distribution and cluster analysis of dengue using self organizing maps in Andhra Pradesh, India, 2011-2013. Parasite Epidemiology and Control. 2018 Feb 1;3(1):52-61. Doi: https://doi.org/10.1016/j.parepi.2016.11.001 PMid:29774299

Top 10 Most Populated States in India with highest Population - 2023 [Internet]. [cited 2023 Sep 3]. Available from: https://www.census2011.co.in/facts/topstatepopulation.html

Geographical map [Internet]. [cited 2023 Sep 3]. Available from: https://www.slbctn.com/Geographical_Map_and_Location.aspx

Where is Tamil Nadu, India on Map Lat Long Coordinates [Internet]. [cited 2023 Sep 3]. Available from: https://www.latlong.net/place/tamil-nadu-india-22554.html

Give reasons as to why the Tamil Nadu coast receives winter rainfall. [Internet]. Toppr Ask. [cited 2023 Sep 3]. Available from: https://www.toppr.com/ask/question/give-reasons-as-to-why-the-tamil-nadu-coast-receives/

Osei FB, Duker AA. Spatial and demographic patterns of Cholera in Ashanti region - Ghana. International Journal of Health Ge-ographics. 2008 Aug 12;7(1):44. Doi: https://doi.org/10.1186/1476-072X-7-44 PMid:18700026 PMCid:PMC2533654

Feser E, Sweeney S, Renski H. A Descriptive Analysis of Discrete U.S. Industrial Complexes. Journal of Regional Science. 2005 May 1;45:395-419. Doi: https://doi.org/10.1111/j.0022-4146.2005.00376.x

Introduction to Self-Organizing Maps [Internet]. Rubik's Code. 2018 [cited 2023 Sep 4]. Available from: https://rubikscode.net/2018/08/20/introduction-to-self-organizing-maps/

Dengue and severe dengue [Internet]. [cited 2023 Sep 6]. Available from: https://www.who.int/southeastasia/health-topics/dengue-and-severe-dengue

Guzman MG, Alvarez M, Halstead SB. Secondary infection as a risk factor for dengue hemorrhagic fever/dengue shock syndrome: an historical perspective and role of antibody-dependent enhancement of infection. Arch Virol. 2013 Jul;158(7):1445-59. Doi: https://doi.org/10.1007/s00705-013-1645-3 PMid:23471635

Velusamy D, Jayakumar S, Ramakrishnan V, Veeramanoharan R, Gupta B, Paramasivan R, et al. Epidemiological and demographic characteristics of dengue and chikungunya infections over five years from 2014-2018, in Tamil Nadu, India. International Journal Of Community Medicine And Public Health. 2021 Apr 27;8(5):2287-92. Doi: https://doi.org/10.18203/2394-6040.ijcmph20211747

Ben-Shachar R, Koelle K. Transmission-clearance trade-offs indicate that dengue virulence evolution depends on epidemiological context. Nat Commun. 2018 Jun 15;9:2355. Doi: https://doi.org/10.1038/s41467-018-04595-w PMid:29907741 PMCid:PMC6003961

Babu D, Chitharaj RR, Krishnan GK. A longitudinal study on the association between water storage practices and dengue indices among rural households of Chengalpattu district, Tamil Nadu. International Journal Of Community Medicine And Public Health. 2020 Jun 26;7(7):2522-7. Doi: https://doi.org/10.18203/2394-6040.ijcmph20202550

Gubler DJ. Dengue, Urbanization and Globalization: The Unholy Trinity of the 21st Century. Trop Med Health. 2011 Dec;39(4 Suppl):3-11. Doi: https://doi.org/10.2149/tmh.2011-S05 PMid:22500131 PMCid:PMC3317603

FAN J, LIN H, WANG C, BAI L, YANG S, CHU C, et al. Identifying the high-risk areas and associated meteorological factors of dengue transmission in Guangdong Province, China from 2005 to 2011. Epidemiol Infect. 2014 Mar;142(3):634-43. Doi: https://doi.org/10.1017/S0950268813001519 PMid:23823182 PMCid:PMC9161228