Abstract— Dengue virus infection has emerged as a notable public health problem in recent decades in terms of its increased transmission to urban and semi urban areas. Study was conducted on samples of suspected dengue cases with the aim to find out seropositivity and seasonal pattern of dengue, which is important for effective control of a disease. For this study, samples were received in department of Microbiology, SMS Hospital Jaipur (Rajasthan) for Dengue IgM & IgG during 1st January 2010 to 31st December 2016. Blood samples collected in plain vials were tested for IgM and IgG antibodies for dengue virus serotype DENV-1, 2, 3 and 4 by a solid phase in vitro immunochromatographic test. It was observed that out of 86,538 serum samples tested, 5011 (5.76 %) were found to be positive for dengue infection. Among these seven years, maximum numbers of dengue cases were identified in year 2013(33.12%). Seropositivity ranged from 0.73% in year 2016 to 13.1% in year 2010. Likewise when seasonal trend was explored it was found that 83.87% of total cases were found from September to November with peak in October. In rest of months around 1% of cases were there in each month except few more cases in August and December i.e. 4.23% and 6.25% respectively. It can be concluded that Dengue has become an endemic disease in this area. Occurrence of most of the cases in post-monsoon period indicates a need for acceleration of vector control programme prior to monsoon.
Keywords: Dengue, Seropositivity, Seasonal Trends
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