Health care workers in Pakistani were killed. They were separate attacks on people working to eradicate polio. Nearly needless to say is that five of the six killed were women.
The situation is perhaps a bit more complex than simply not wanting vaccination. The Taliban is accusing the program as being a cover for US spying. That may or may not be unreasonable. But, there is a point where you say protecting my children, making the world safe for my children is more important than ideological purity.