Prevalence of Dengue and Chikungunya,a hospital based study in district Bardhaman, West Bengal, India.

Dengue and Chikungunya are the vector-borne diseases,spread by mosquito vectors Aedes aegypti. Studies show that these have become the major health problems nowadays. World wide spread of these diseases especially in tropical and subtropical regions leads to recurrent outbreaks. This Article highlights the prevalence of these viruses in district Bardhaman, South Western region of West Bengal. A volume of 2 to 3 ml of blood was collected from each patients suspected with the symptoms of Dengue or Chikungunya in clot vials under aseptic conditions and centrifuged at 5000 rpm for 5 minutes for separating the serum. In case of Dengue testing, NS1 antigen or anti DENV IgM were detected. Dengue negative samples were sent for serological diagnosis of Chikungunya virus. From this study it was observed that prevalence was greater in individuals in the age group of 20-45 years followed by individuals below 20 years. This study showed that dengue infection peaked in the month of November with gradual rise in the month of October because of stagnant freshwater during post-rainy seasons (June to September), responsible for breeding of vector mosquitoes. In case of Dengue infected individuals, male prevalence is greater than females whereas female predominance was greater for Chikungunya. Our studies highpoint post Covid occurrence of Dengue and Chikungunya in the districts around East Bardhaman (West Bardhaman, Purulia, Birbhum,Hooghly, West Midnapore).