Dengue fever is caused by the bite of an Aedes Aegypti mosquito. This female mosquito lays eggs in water containers and plants near your surroundings.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/dengue-how-identify-aedes-aegypti-mosquito
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dengue
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vector-borne-diseases
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rainfall
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/floods
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health