Abstract
IN an era that has seen the recognition of important new infectious diseases and syndromes such as the acquired immunodeficiency syndrome (AIDS), legionellosis, and toxic shock, and the subsidence of venerable infectious disorders such as smallpox, polio, and streptococcal-induced acute rheumatic fever or glomerulonephritis, it should come as no surprise that another battle is being joined between humanity and microbes. In this issue of the Journal, Prince and colleagues1 report on a series of patients from two hospitals in the Philadelphia area who had pulmonary disease due to Mycobacterium avium complex. Several aspects of their experience merit discussion.First, . . .