Public Health Image Library Public Health Image Library (PHIL) Access information: Freely available. Description: Stills, videos and illustrations from the USA's Centers for Disease Control and Prevention (CDC). Copyright: For use as reference, teaching, presentation, and public health messages. Images are either "Public Domain" (free use) or "Copyright Protected" (restricted, obtain permission before use). Look directly beneath an image for this information. This article was published on 2024-08-21