IJCRR - 4(18), September, 2012
Pages: 184-187
Date of Publication: 29-Sep-2012
Print Article
Download XML Download PDF
SERODIAGNOSIS OF DENGUE IN TERTIARY CARE HOSPITAL IN DAVANGERE DISTRICT OF KARNATAKA
Author: G.K.Mangala, G. Vishwanath
Category: Healthcare
Abstract:Purpose: To study the seoprevalence of Dengue infection in Davangere district of Karnataka. Materials and Methods: A total of 1952 blood samples were collected from patients attending tertiary care hospital in south India from January to December 2010.Serum was separated and subjected to Ig M ELISA. Results: Out of 1952 samples tested 583 (29.9%) were positive for IgM ELISA with female preponderance 266 cases (33.29%).Common age group affected was 11-20 yrs followed by 1-10 yrs with 39.45% and 36.36% respectively.Maximum number of cases were seen during the month of july and August. Conclusion: The prevalence of Dengue is 29.9% which is in agreement with other studies . More number of cases were seen in july and august affecting less than 20yrs age group which helps to plan preventive measure strategies.
Keywords: Dengue, Seroprevalence, ELISA.
Full Text:
INTRODUCTION
Dengue fever, dengue heamorrhagic fever (DHF) and Dengue shock syndrome (DSS) represent a spectrum of disease resulting from infection with the dengue virus (member of the genus flavivirus and family flaviviridea)which is primarily transmitted by the mosquito ,Aedes aegypti and Ae albopticus.Dengue fever can be caused by one of four types of dengue virus :DEN-1,DEN-2,DEN-3 and DEN-4.Dengue virus infection is clinically similar to many other acute febrile illnesses ,in which serological testing plays a important role in early diagnosis and management. The spectrum of illness is broad and ranges in severity from mild symptoms to death .The World Health Organisation (WHO) receives reports of about 5,00,000 dengue fever cases each year, but estimates that as many as 50 million people are infected annually with 24,000 deaths(3). India is endemic for dengue infections and various states have reported outbreaks. In India highest number of Dengue cases were reported in 2010, as 25725 cases and 99 deaths till November,2010.In Karnataka highest number were reported in 2010 with 2177 cases and 6 deaths (4) . Laboratory diagnosis of Dengue fever can be done by various methods such as virus isolation and characterisation, detection of genomic sequence by a nucleic acid amplification assay, and detection of dengue virus antigen & specific antibodies (5) .However, most of laboratories in India do not have setup for molecular diagnosis,hence diagnosis is made by demonstration of antigen and antibodies by ELISA based tests. This study was conducted to know the seroprevalence of dengue in tertiary care hospital in central part of Karnataka.
MATERIALS AND METHODS
The study was conducted in department of microbiology, J.J.M. Medical college, Davangere .The study group consist of clinically suspected cases of dengue attending Chigateri General and Bapuji hospital attached to J.J.M.Medical college in the year 2010. A total of 1952 blood samples were collected from clinically suspected cases from January to December 2010.Sera was separated and Ig M ELISA was performed using Dengue IgM Microlisa manufactured by J.Mitra. The test was performed according to manufacturers instruction.
DISCUSSION
The first evidence of occurrence of Dengue fever in the country was reported during 1956 from Vellore district in Tamilnadu . Subsequently , the first DHF outbreak occurred in Calcutta, West Bengal in 1963 with 30% of cases showing haemorrhagic manifestations. All the four serotypes have been isolated in India since 1966 .In the present study seroprevalence of Dengue infection was 29.9% .Similar findings have been reported by various other studies . Ukey PM et al(6) reported prevalence of 31.3%,Lal M(7) et al reported 39.4 %.But Gunasekaran(8) et al reported high prevalence of 43.0% and Garg et al reported low prevalence of 19.7%. In our study high incidence was seen in age group of 11-20 yrs with 230 cases (39.45%) followed by 1-10 yrs with 212 cases (36.36%).This is in concordance with other workers, Gunasekaran(8) et al has reported high incidence of 84.5% in age group less than 14 yrs, Ukey PM et al(6) reported 31.71% in 15-30 yrs age group. The incidence was high in females with 33.29%. Seasonal distribution showed highest incidence in july and August. This is in agreement with other studies like Garg et al(9) , Pandhya G(10) et al and Tripathi P et al(11) .The high incidence in monsoon and postmonsoon is due to the climatic conditions favouring breeding of mosquitos and transmission of disease.
References:
1. Guzman MG,Kouri G.Dengue diagnosis:advances and challenges.Int J Infect Dis.20004;8:69-80.
2. World Health Organisation-Dengue Haemorrhagic fever: Diagnosis, Treatment, Prevention and control.2nd Edn.New Delhi:WHO/SEARO,1997.
3. World Health Organisation- Dengue :Guidelines for diagnosis,treatment,prevention and control:a joint publication of the WHO and a special programme for research and training in tropical diseases(TDR) Geneva:WHO,2009.
4. Baruah K,Dhariwal AC.Epidemiology of dengue,its prevention and control in India. J Indian Med Assoc.2011;109:82-86.
5. Robert.B.Belshe editor .Flaviviruses in Textbook of human virology,2nd edn,Mosby -Year Book,Inc:1991;23:p 23.
6. Ukey PM,Bondade SA,Paunipagar PV,Powar RM,Akulwar SL.Study of seroprevalence of dengue fever in central India.Indian J Community Med 2010;35:517-19.
7. M Lal,A Aggarwal ,A Oberio.Dengue feveran emerging viral fever in Ludhiana,North India.Indian J Public Health.2007;51:198-99.
8. Gunesekaran P,Kaveri K,Mohana S,Arunagiri K,Babu BS,Priya PP et al. A retrospective analysis Dengue disease status in Chennai (2006-2008) Indian J Med Res . 2011;133:322-25.
9. Garg A,Garg J,Rao YK,Upadhyaya GC,Sakhuja S.Prevalence of dengue among clinically suspected febrile episodes at a teaching hospital in North India. J Infect Dis Immun.2011;3:85-89.
10. Pandhya G. Prevalence of dengue infection in India. Def Sci J.1982;32:359-70.
11. Tripathi P,Kumar R,Tripathi S,Tambe JJ,Venkatesh V.Descriptive epidemiology of Dengue transmission in Uttar Pradesh.Indian Paediatrics.2008;45:315-18.
|