In honor of World Pneumonia Day, Dr. Richard Besser, an ABC News Chief Health, medical editor and pediatrician, will be hosting a twitter chat about pneumonia. Join the conversation!

This year features several sessions on, "Pneumonia, Respiratory Infections and Tuberculosis."

In Côte d’Ivoire, while pneumonia is the second largest cause of child deaths, it remains unknown by most. AGIS is working to educate the public...