Epidemiology and etiology of childhood pneumonia
Igor Rudan, Cynthia Boschi-Pinto, Zrinka Biloglav, Kim Mulholland, Harry Campbell
Volume 86, Number 5, May 2008, 408-416
Table 1. Estimates of incidence and number of new cases per year of clinical pneumonia in children aged less than 5 years, by WHO regiona
|WHO region||Total populationaged 0–4 years(millions)||Estimated incidence(e/cy)||Estimated no. of new cases per year(millions)|
|Total (developing countries)||523.31||0.29||151.76|
|Total (developed countries)||81.61||0.05||4.08|
e/cy, episodes per child-year.a Up to 10% of all new cases may progress to severe episodes and require hospitalization.