This new edition of Recent Advances in Immunization comes at a critical time in the evolution of national immunization programmes. Immunization is at a crossroads. The future offers new opportunities to tackle important public health priorities with new technologies. However, new vaccines are much more expensive than the traditional vaccines used in childhood immunization programmes. The book s chapters attempt to address some of the enormous technical and programmatic challenges some countries must overcome to complete the unfinished agenda of immunization coverage. It is primarily intended to assist national immunization managers and their staff, but many other health professionals and other groups will find it useful. Students of schools of public health, medicine, and nursing; epidemiologists and disease control specialists; experts on surveillance of vaccine preventable diseases; vaccinologists; and infectologists will all likely benefit from this book.