The Immunoassay Kit Directory, Series B: Infectious Diseases deals with commercially available immunoassay kits for the diagnosis of clinically important infectious diseases. Detailed information about each kit is provided; over 19 different major parameters are listed in a consistent manner to allow for easy comparison. Each organism is introduced by a short article and there are also review articles of relevance to the current issue. Comprehensive indexes are provided. This part of the Directory covers kits for the diagnosis of genitourinary infections such as chlamydia, hepatitis A, B, C and D, herpes simplex, HIV, HTLV, neisseria, streptococcus and treponema. In total almost 600 kits are described in detail. Further parts of the Directory deal with respiratory infections (Part 2) and enteric and other infections (Part 3).