The National Immunisation Policy maybe in for a change with oral polio vaccines (OPV) being replaced by injectable polio vaccines (IPV), thanks to a WHO-funded clinical trial and research undertake
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/vizag-who-polio-vaccine-project-list
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-visakhapatnam
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vishakhapatnam-d
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/polio
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diseases
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/andhra-pradesh
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/child-health