Maharashtra, Karnataka, Tamil Nadu and Kerala worst hit by the flu tragedy. Air borne transmission makes it tough for prevention measures to work.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/8648-swine-flu-cases-and-345-deaths-reported
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/ndtv
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/swine-flu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/influenza
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/infectious-diseases
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mumbai
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health