Polio vaccine to generally be presented to London Youngsters following much more virus found Britain's Overall health Protection Company explained it experienced detected polio viruses derived from your oral polio vaccine in sewage h2o from eight boroughs of London. Correspondent Tracy Smith talks with local weather and water specialists concerning http://onlinemanuals.txdot.gov/help/urlstatusgo.html?url=www.bbcworldnewstoday.com