Preliminary Investigation of Dengue Vectors in District Dehradun, Uttarakhand.

Document Type : Original Article

Authors

1 Department of Zoology, University of Kashmir, Hazratbal, Srinagar-190006- India

2 Entomology Lab Deptt of Zoology D.A.V. (P.G.) College Dehradun- 248001 Uttarakhand- India

Abstract

Preliminary investigation   were  carried  out  concerning  the  occurrence  of  dengue vectors Aedes  aegypti  and  Aedes  albopictus  in  rural and  urban  areas  of  various localities of Distt  Dehradun.  The distribution of dengue vectors, A.  aegypti and  A. albopictus vary from  place  to  place.  Epidemiological  interpretation  of  various entomological  indices  like  house  index,  container  index,  breteau  index  and pupal index were  carried out  by  WHO  norms.  A total  of  971  houses  were  searched  during  house  to  house  larval  survey  for  Aedes breeding  in  all  kinds  of temporary  and  permanent  water  bodies  both  indoors  and  outdoors  in  rural  and  urban  areas.  Of  971  houses  breeding  of  Aedes  could  be  detected  in  226  houses,  684  water containers were searched for Aedes breeding,  out  of  which  93  were  found  positive. The  over  all  house index (HI),  Container index (CI), breteau index (BI)  and  pupal index  (PI)  were  23.27%,  13.60%,  9.58%  and  5.87%  respectively. All the indices were found to be higher than  normally  acceptable limits  (WHO,  2003)  and Aedes breeding was recorded in all the  localities  except  Mussorie  and  found  to  vary  from  locality  to  locality. Dengue  viruses  circulate  mainly  between  human  and  vector  mosquitoes,  and  the  presence of vector    is  a  limiting  factor  of  transmission.  Therefore,  spatial  distribution  of  dengue  vectors  is  a significant  concern  in  the  epidemiology  of  the  disease. 

Keywords

Files

Share

How to cite

Statistics