Following vaccination, Japanese encephalitis (JE) circumstances in Lakhimpur, Assam
Background: Assam is positioned as the most vulnerable state for Japanese encephalitis (JE) infection. It contributes more than 51% of total JE positive cases reported in the country during the year 2014. A study was carried out in Lakhimpur district of Assam to observe the incidence of AES/JE after vaccination.
Methods: During January to December 2014, a total of 96 numbers of acute encephalitis cases (AES) were reported from Lakhimpur district of Assam. Of which, 27.08% (26/96) cases were found in the below 15 years age group. Blood samples were collected from AES patients and enzyme linked immunosorbent assay method was done for detection of JE IgM antibody.
Results: The positivity rate for Japanese encephalitis was 22.92%. Initial case of AES was reported on 4th January; however the first JE positive case was detected in 1st July. All age group has been affected; children below 15 years of age groups (13/22) are mostly vulnerable to JE infection. Males are mostly susceptible for AES/JE infection. Maximum 58 numbers of AES cases were reported during the month of July. However, except two, all other JE positive cases were also observed in the month of July. High incidence of AES/JE cases was observed from Boginodi and Nowboicha area. A total of 7 patients expired due to AES/JE, of which 3 cases were JE IgM positive. High positivity rate for JE was observed in Dhalpur and Dhakuakhana area. Maximum case fatality rate for JE was also noticed in Dhalpur and Bihpuria area. All the AES/JE death cases were unvaccinated as they were not present in their locality during the JE vaccination period. However, 36.36% (8/22) JE vaccinated cases were shown JE IgM positive.
Conclusion: High incidence of AES/JE cases occurs due to the presence of large number of domestic pigs, flooding of paddy fields etc.
Keywords: Acute encephalitis syndrome, Japanese encephalitis & Lakhimpur
 Sharma, J. Dutta, P. Khan, S.A. Chowdhury, P. Borah, J. Mahanta, J. Comparison of different diagnostic techniques for detection of Malaria infection in blood samples collected from Malaria endemic areas of Assam and Arunachal Pradesh. International journal of scientific and engineering research., 2013. 4 (9):2587-2603.
 Sharma, J. Malakar, M. Distribution of Typhoid fever in different rural and urban areas of Lakhimpur district of Assam. International journal of research and development of health., 2013. 1 (3):109-114.
 Sharma, J. Das, J.N. Pathak, A. Surveillance of Acute encephalitis syndrome in Lakhimpur District of Assam: January 2008-October 2012. Golden Research thought., 2013. 3(3):1-3.
 Sharma, J. Malakar, M. Soni, M. Pathak, A. Outbreak of Cholera in some villages of Boginodi area in Lakhimpur district of Assam. International Journal of Pharmacy and Biological Sciences., 2013. 3 (3): 450-454.
 Sharma, J. Pawe, M. Appearance of insecticide resistance capability among malaria causing mosquito vectors: an apprehension in developed and developing nation. International Journal of Pharmacy and Biological Sciences., 2013. 3 (4): 86-90.
 Sharma, J. Malakar, M. Gupta, S. Inhabitants believe on quack grounds for reemergence of viral hepatitis cases in Lakhimpur district of Assam. Advances in Applied Science Research., 2013. 4 (6): 242-245.
 Sharma, J. Malakar, M. Gupta, S. Dhandar, A.R. Food Poisoning: A cause for anxiety in Lakhimpur district of Assam. Annals of Biological Research., 2014.5 (1):46-49.
 Sharma, J. Baruah, M.K. Pathak, A. Khan, S.A. Dutta, P. Epidemiology of Japanese encephalitis cases in Dhemaji district of Assam, India. Annals of Biological Research., 2014. 5 (1):50-54.
 Sharma, J. Malakar, M. Das, J. Outbreak of Rubella cases in Lakhimpur district of Assam. Entomology and Applied Science Letters., 2014. 1(3):49-52.
 Sharma, J. Prevalence of malaria cases in tea garden areas of Lakhimpur district, Assam. International Journal of Pharmacy and Pharmaceutical Sciences. 2014. 6 (8): 571-573.