(Click on the lower right side of the Index Box to search for specific topics) Video Archive Sep 2, 2025 Vaccines and Teens: The Busy Social Years (PDF Download) Sep 2, 2025 Sep 2, 2025 Sep 2, 2025 STEM Careers (PDF Download) Sep 2, 2025 Sep 2, 2025 Aug 29, 2025 The Innate and Adaptive Immune Systems (Video) Aug 29, 2025 Aug 29, 2025 Aug 29, 2025 Pennsylvania: At the forefront in the prevention of infectious diseases_CHOP private (Video) Aug 29, 2025 Aug 29, 2025 Aug 28, 2025 Careers in Healthcare (PDF Download) Aug 28, 2025 Aug 28, 2025 Aug 28, 2025 Q&A with Dr. Offit (Video) Aug 28, 2025 Aug 28, 2025 Aug 28, 2025 Careers in Healthcare (Video) Aug 28, 2025 Aug 28, 2025 Aug 28, 2025 The History and Science of Vaccines (Video) Aug 28, 2025 Aug 28, 2025 Aug 28, 2025 Survivors Tell Their Stories (Video) Aug 28, 2025 Aug 28, 2025 Aug 28, 2025 Public Health Youth Summit - Introduction (Video) Aug 28, 2025 Aug 28, 2025 Aug 28, 2025 Public Health Youth Summit - Full Presentation (Video) Aug 28, 2025 Aug 28, 2025 Aug 16, 2025 August 2025 Newsletter Aug 16, 2025 Aug 16, 2025