While the goal of polio virus eradication is in sight, there are concerns about post-eradication manufacturing and stockpiling vaccine stores containing live virus that could escape and repopulate
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/creating-safer-polio-vaccine-strains-post-eradication-era
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/medical-express
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/polio
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vaccination
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drugs
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/child-health