TY - CHAP M1 - Book, Section TI - Croup A1 - Gill, Peter John A1 - Wright, Robert Bruce A1 - Klassen, Terry A2 - Shah, Samir S. A2 - Kemper, Alex R. A2 - Ratner, Adam J. Y1 - 2019 N1 - T2 - Pediatric Infectious Diseases: Essentials for Practice, 2e AB - Croup (acute laryngotracheobronchitis) is a respiratory illness of childhood and one of the most common causes of acute stridor in children seen in the office or emergency setting. In North America, croup affects approximately 3% of the population; it is most common in children aged 6 months–6 years, with the largest number of cases occurring in children 1–2 years of age.1,2 The male : female ratio for croup is 1.4 : 1.1 There are two seasonal peaks of croup in North America: the first in autumn and the second in late winter.1 Because of biennial increases in viral epidemics, the number of croup cases is 50% higher in odd-numbered years when compared with even-numbered years.3 SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1157321585 ER -