It covers background, diagnosis, and treatment recommendations for a full range of infectious diseases treated by primary care physicians. The handbook is written by a Professor of Infectious Disease and a Professor of Family Medicine at Thomas Jefferson University, and is geared toward giving primary care internists, family physicians, and obstetricians quick access to the information they need to take care of patients with infectious illnesses. The handbook is updated quarterly, and updates are free for one year after purchase. The Handbook uses the RediReader, which in included at no extra-cost.