With advances in technology and medical science, children with previously untreatable and often fatal conditions, such as congenital heart disease, extreme prematurity and pediatric malignancy, are living longer.  While this is a tremendous achievement, pediatric providers are now more commonly facing challenges in these medical complex children both as a consequence of their underlying disease and the delivery of medical care.  The term healthcare-associated infections (HAIs) encompass both infections that occur in the hospital and those that occur as a consequence of healthcare exposure and medical complexity in the outpatient setting.  HAIs are associated with substantial morbidity and mortality for the individual patient as well as seriously taxing the healthcare system as a whole.  In studies from the early 2000s, over 11% of all children in pediatric intensive care units develop HAIs and this figure increases substantially if neonatal intensive care units areconsidered.  While progress has been made in decreasing the rates of HAI in the hospital, these infections remain a major burden on the medical system.  In a study published in 2013, the annual estimated costs of the five most common HAIs in the United States totaled $9.8 billion.  An estimated 648,000 patients developed HAIs in hospitals within the US in 2011 and children with healthcare-associated bloodstream infection have a greater than three-fold increased risk of death. While a number of texts discuss HAIs in the broader context of infectious diseases or pediatric infectious diseases (such as Mandell’s Principles and Practice of Infectious Diseases or Long and Pickering’s Principles and Practice of Pediatric Infectious Diseases) no single text specifically focuses on the epidemiology, diagnosis and management of HAI in children.  Many infectious diseases texts are organized based on the microbiology of infection and from this starting point then discussing the clinical syndromes associated with the organism of interest.  For instance, a chapter on Staphylococcus aureus may contain a brief discussion of the role of S. aureus in surgical site infections in the wider context of all staphylococcal disease.  For clinicians caring for children at the bedside, however, the clinical syndrome is typically appreciated and intervention necessary prior to organism identification.  We propose a text that details both the general principles involved in HAIs and infection prevention but also provides a problem oriented approach.  Such a text would be of interest to intensivists, neonatologists, hospitalists, oncologists, infection preventionists and infectious diseases specialists.  The proposed text will be divided into three principle sections: 1) Basic Principles of Infection Control and Prevention, 2) Major Infectious Syndromes and 3) Infections in Vulnerable Hosts.  Chapters in the Major Infectious Syndromes section will include discussion of the epidemiology, microbiology, clinical features, diagnosis, medical management (or surgical management as appropriate) and prevention of the disease entity of interest.  Chapters will seek to be evidenced based as much as possible drawing from the published medical literature as well as from clinical practice guidelines (such as those from the Infectious Diseases Society of America) when applicable.  We intend to include tables, figures and algorithms as appropriate to assist clinicians in the evaluation and management of these often complex patients.  Finally, we intend to invite authors to participate in this project from across a number of medical specialties including infectious diseases, infection control, critical care, oncology and surgery to provide a multidisciplinary understanding of disease.  It is our intent to have many chapters be co-written by individuals in different subspecialties; for instance,a chapter on ventilator-associated pneumonia may be co-written by both infectious disease and critical care medicine specialists.  Such a unique text has the potential to provide important guidance for clinicians caring for these often fragile children.