Best Shot Foundation

Only in its second year, it seems like World Pneumonia Day might be moving from spark to blaze -- engaging governments, child health organizations and advocates in an effort to spotlight the leading killer of children.

While there are millions of cases of viral pneumonia every year, there are far too few pneumonia videos that "go viral" on the Internet.

Pneumonia is so poorly recognized that New York Times columnist Nicholas Kristof called it "The killer no one suspects" and UNICEF dubbed it "the forgotten killer of children."