Six polio vaccination workers were killed in attacks in Pakistan since 2014 . A Taliban commander in northwest Pakistan banned polio vaccines . `` Those killed were among thousands who work selflessly across Pakistan to eradicate polio . '' Pakistan is one of the countries where polio is endemic , WHO says . WHO estimates that children living in the northwest tribal area died of the vaccine .
Six polio vaccination workers were killed in attacks in Pakistan since 2014 . A Taliban commander in northwest Pakistan banned polio vaccines . Pakistan is one of the countries where polio is endemic , WHO says . WHO estimates that children living in the northwest tribal area died of the vaccine .