Rabid wolves, and wolves held in captivity have done so, and there have been cases of Asian wolves killing people, but for some reason it hasn't happened here. That doesn't mean it couldn't happen. Any wild animal is unpredictable and should be respected. And there have been two documented cases of a wild wolf biting a human, in Alaska and Canada. It is important to keep the degree of danger in perspective.
Cars kill thousands of people.
Domestic dogs kill dozens of people each year. Even coke machines fall on and kill a handful of people each year. Other wildlife have been known to inflict serious injuries. Living with wolves is likely to prove far safer than these and many other dangers we take for granted. The best way to avoid the potential danger of wolves is to take similar precautions to those you would take with mountain lions and bears.