George W. Comstock, 92; epidemiologist was influential in the treatment of tuberculosis

Dr. George W. Comstock, a pioneering epidemiologist who almost single-handedly blocked the use of the flawed BCG tuberculosis vaccine in the United States and who played a key role in the development of other prevention strategies against the disease, died Sunday at his home in Smithsburg, Md. He was 92 and had battled prostate cancer for several years.

By Thomas H. Maugh II

July 18, 2007