RT Journal A1 Smilack JD T1 PArasitic infections JF JAMA JO JAMA YR 1989 FD July 28 VO 262 IS 4 SP 569 OP 569 DO 10.1001/jama.1989.03430040141047 UL http://dx.doi.org/10.1001/jama.1989.03430040141047 AB One of the most intriguing oxymorons of medicine is constant change. That which is learned as medical students is adequate only for the moment. It must be shaped like clay—a piece added here, another pinched there—but never allowed to harden to a rigid state.Take parasitic diseases, for example. During the last several years, we have been witnessing the profound interplay between the human immune system and the pathogens hitherto rarely appreciated. Toxoplasmosis, cryptosporidisis, pneumocystosis—infections few clinicians might have anticipated diagnosing now are seen routinely in many medical centers. It is trite but true that all practicing physicians must become familiar with these pathogens of the 1980s.Parasitic Infections is the seventh in a series of tightly edited volumes on "Contemporary Issues in Infectious Diseases." Previous works have included such topics as antibiotics, respiratory infections, endocarditis, and new medical and surgical approaches to infectious diseases. All have been worthy additions