Dengue, the mosquito-borne disease which hits India hard every year, is estimated to cost the world a whopping $8.9 billion annually.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/dengue-costing-india-over-1bn-year-study
[2] http://admin.indiaenvironmentportal.org.in/category/author/sushmi-dey
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dengue
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vector-borne-diseases
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health