SARS, West Nile virus, avian influenza, and bioterrorism-related anthrax are among the many infectious diseases that dominate the discussion among public health professionals and policy markers today. This timely revision of Infectious Disease Epidemiology has been thoroughly updated to cover these and many other contemporary issues in the area of infectious diseases. Updates include four new chapters covering immunology, measles, meningococcal disease, and vector-borne infections. The chapter covering HIV has been substantially expanded to include issues of host genetics and offers a review of behavioral interventions. Special attention is given to the overlapping epidemics of HIV and AIDS, tuberculosis, and malaria in sub-Saharan Africa, including a description of the activity and funding for these major crises. The authors have incorporated some basic information from the disciplines of molecular biology, immunology, and human behavior to help epidemiologists with the design and evaluation of programs intended to control infectious diseases. This comprehensive, reader-friendly reference is an essential resource for both students and professionals in the field of infectious disease epidemiology.