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 May 16, 2016 The Best Baby Products Ever child-care June 14, 2016 4 Childcare Services in Vancouver events June 13, 2016 How to Do the Ex with the Fam active June 14, 2016 9 Toronto Family Fun Runs events June 13, 2016 How to Do Canada Day in Toronto