Abstract
The many new antimicrobial agents commercially available have created new problems for the clinician. This is the first in a series of five articles in which the authors consider the clinical application of the commonly used drugs and the problems involved in their use. Subsequent articles in this series will discuss the following aspects of antimicrobial therapy: part 2, dosage and mode of administration; part 3, untoward reactions; part 4, selection of regimen; and part 5, some current concepts of therapy.