What is Pneumococcal Disease? Learn about pneumococcal disease, which is the most common cause of vaccine-preventable death worldwide in children younger than five years of age¹. 1 of 4 Photos 1 2 3 4 » OTHER GALLERIES gear July 11, 2016 Hawaiian Luau Party Ideas gear June 14, 2016 11 Wonderful Ways to Preserve Their Artwork gear June 14, 2016 The Best Sugar-Free Snacks eatsavvy June 30, 2016 So Berry Nice gear June 14, 2016 The List: The Best of SavvyMom