10Feb 2020

ENTOMOLOGICAL INVESTIGATIONS OF AN OUTBREAK OF JAPANESE ENCEPHALITIS IN THREE DISTRICTS OF CHHATTISGARH, INDIA IN THE YEAR 2017

  • Shankarlal Agrwal Science College Salekasa, RTM University Nagpur 441916, India.
  • Tai Golwalkar Mahavidhyalaya, Ramtek, RTM University Nagpu 4 441106, India.
  • CME&VM, NCDC, Delhi 110054, India.
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Background : Japanese encephalitis (JE) is a serious Zoonotic Vector Borne infection of the brain caused by the Japanese encephalitis virus (JEV) of family Flaviviridae .Many outbreaks have been occurred in many parts of Southeast Asia including India. An outbreak of JE was occurred in three districts of Chhattisgarh during the year 2017. Objectives: The purpose of this study To review and assess the situation of dengue outbreak in Durg district and conduct and entomological survey in all the the JE affected areas. Methods: The Entomological study was carried out during December 2017three districts namely Dantewada, Bastar and Sukma in Gorakhpur of Chhattisgarh. A total of 12 JE cases repoted from these districts. Larval collection was done and per dip density was calculated and for adult collection PMHD was calculated. Results: During the outbreak investigation 9 different types of mosquito breeding were detected in all the affected areas. Highest breeding was detected in Fallow fields (36.59 %) followed by Drains (32.14 %), Percent river bed pool (28.57%), paddy fields (19.35 %), Mud pools (6.25 %), Hoof prints (3.5%). The various Culex species collected by hand catch method included, Cx. quinquefasciatus Cx. vishnui Cx. pseudovishnui Cx. Tritaeniorhynchus. Interpretation & Conclusion: The findings showed that scattered cases of JE and most of the cases under age of 0-15 years old, facilitated by different species of Culex in the affected areas. JE is a vaccine-preventable disease, so an immunization may be done and an appropriate vector control strategy and application of standard hygiene practices in these affected areas could be a result in reduction in morbidity and mortality due to JE virus.


  1. August 2015.?Archivedfrom the original on 17 June 2017. Retrieved?29 October?2017.
  2. Ministry of Health Government of Bhutan. Operational Guidelines for Sentinel Surveillance of AcuteEncephalitis Syndrome (AES).2011.
  3. Van Den Hurk AF, Montgomery BL, Northill JA, Smith IL, Zborowski P, Ritchie SA, et al. The first isolation of Japaneseencephalitis virus from mosquitoes collected from mainland Australia. Am J Trop Med Hyg2006; 75(1): 21?5.
  4. Moloney, Rachael M.; Kmush, Brittany; Rudolph, Kara E.; Cummings, Derek A. T.; Lessler, Justin (7 May 2014). \"Incubation Periods of Mosquito-Borne Viral Infections: A Systematic Review\". The American Journal of Tropical Medicine and Hygiene. 90 (5): 882?891.
  5. Japanese encephalitis CDC. August 2015.?Taken from the original on 24 May 2017. Retrieved?29 October2017.
  6. Ghosh D, Basu A. Japanese encephalitis-a pathological and clinical perspective. PLoSNegl Trop Dis. 2009; 3(9): e437.
  7. Work TH, Shah KV. Serological diagnosis of Japanese B type of encephalitis in North Arcot district of Madras State, India, with epidemiological notes. Indian J Med Sci. 1956; 10:582-592.
  8. Solomon T. Flavivirus encephalitis. N Engl J Med. 2004;351(4): 370?378.
  9. Libraty DH, Nisalak A, Endy TP, Suntayakorn S, Vaughn DW, Innis BL. Clinical and immunological risk factors for severe disease in Japanese encephalitis. Trans R Soc Trop Med Hyg 2002; 96(2): 173?8.
  10. NVBDCP - National Vector Borne Disease Control Programme. Japanese encephalitis vectors in India. National Vector Borne Disease Control Programme: New Delhi; 2018.
  11. Philip Samuel P, Hiriyan J, Gajanana A. Japanese encephalitis virus infection in mosquitoes and its epidemiological implications. ICMR Bull 2000; 30(4): 37?43.
  12. Lin TH, Lu LC. Population fluctuation of Culex tritaeniorhynchus in Taiwan. Chinese J Entomol 1995; 15(1): 1?9. 19.
  13. Gingrich JB, Nisalak A, Latendresse JR, Sattabongkot J, Hoke CH, Pomsdhit J, et al. Japanese encephalitis virus in Bangkok: factors influencing vector infections in three suburban communities. J Med Entomol 1992; 29(3): 436?44. 2.
  14. WHO factsheet no. 386.2015.
  15. Carey DE, Myers RM, Webb JK, Reuben R. Japanese encephalitis in south India. A summary of recent knowledge. J Indian Med Assoc 1969; 52:10-15.
  16. Reuben R, Thenmozhi V, Samuel PP, Gajanana A, Mani TR, Mosquito blood feeding patterns as a factor in the epidemiology of Japanese encephalitis in southern India. Am J Trop Med Hyg 1992; 46: 654-63.
  17. Low VL, Chen CD, Lee HL, Lim PE, Leong CS, Sofian-Azirun M. Nationwide distribution of Culex mosquitoes and associated habitat characteristics at residential areas in Malaysia. J Am Mosq Control Assoc 2012; 28(3): 160?9.
  18. Bhowmik D, Duraivel S, Jaiswal J, Tripathi KK, Sampath Kumar KP. Japanese encephalitis epidemic in India. Pharma Innovation. 2012; 1(10): 47-54.

[Amarpal Singh Bhadauriya, Pankaj U. Ramteke, Abhay Kumar Sharma, R.K. Meena, Rina Kumawat, Sweta Bhan, Lalthazuali, Ram Singh and Arun Chauhan (2020); ENTOMOLOGICAL INVESTIGATIONS OF AN OUTBREAK OF JAPANESE ENCEPHALITIS IN THREE DISTRICTS OF CHHATTISGARH, INDIA IN THE YEAR 2017 Int. J. of Adv. Res. 8 (2). 161-171] (ISSN 2320-5407). www.journalijar.com


Dr. Amarpal Singh Bhadauriya
Centre for Medical Entomology and Vector Management, NCDC, Delhi

DOI:


Article DOI: 10.21474/IJAR01/10448       DOI URL: http://dx.doi.org/10.21474/IJAR01/10448


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