BOSTON — A New Hampshire woman who is critically ill with gastrointestinal anthrax most likely swallowed spores while participating in a community drumming circle, state health officials said Tuesday...The woman was among some 60 people who attended the drumming session on Dec. 4 at the United Campus Ministry near the University of New Hampshire in Durham...Investigators found traces of anthrax on two African drums and an electrical outlet in the room where the event took place, Dr. Talbot said, and are theorizing that the woman swallowed spores that were aerosolized by the drumming. The state has not identified the woman...