Officials says three women and their driver were killed in the most deadly attack on health workers in two years.<br/> <br />Blood spattered shoes and papers after gunmen kill three female polio workers and their driver in Pakistan.<br/> <br />Wednesday's attack is the deadliest on the health workers in two years.<br/> <br />Polio workers blame the government.<br/> <br />(SOUNDBITE) (Urdu) UNIDENTIFIED POLIO WORKER, SAYING:<br/> <br />"Polio is not getting eradicated; only our people are getting wiped out."<br/> <br />Polio workers are often targeted by Taliban militants. They say the campaign to immunize children is a cover for Western spies -- or an effort to sterilize children.<br/> <br />Polio cases hit a 15-year high in Pakistan this year. The disease, which can kill or paralyze a child within hours of infection, has been eradicated everywhere else, except for Nigeria and Afghanistan.
