Close Why vaccines are so important Dr. Russell Libby of Inova Children's Hospital talks about why school vaccines are cruical to overall public health. WUSA 11:32 AM. EDT August 13, 2014 JOIN THE CONVERSATION To find out more about Facebook commenting please read the Conversation Guidelines and FAQs Leave a Comment TRENDING VIDEOS Child killed in house fire in Lorton, Va. Md. residents react to immigration Parent finds virtual sex acts in app for kids Constituents want to meet with Comstock Verify: Did Obama deport more immigrants? Faith leaders protest ICE raid outside church Verify: Trump campaign's media survey Bruce Johnson shares his #HeartLove story The how-to's of Soulcycle Local students earn scholarships to China More Stories Young child dies in Lorton, Va. house fire Feb 21, 2017, 7:43 p.m. Verify: What do Metro station managers really do? Feb 21, 2017, 9:58 p.m. Warmer Wednesday, 70s arrive Thursday and Friday Feb 18, 2016, 10:28 a.m.