Polio aid workers killed in Pakistan [VIDEO]

Health workers administering polio vaccinations came under fresh attack in Pakistan on Wednesday, a troubling development in a nation that remains one of three in the world where the disease has yet to be eradicated.

Three workers were killed in separate attacks, a day after five others died in similar circumstances.

All of them were part of a massive vaccination campaign nationwide.

(via. http://edition.cnn.com/2012/12/19/world/asia/pakistan-polio-workers-attack/index.html?hpt=hp_t1)