Some U.S. federal agencies and initiatives are modifying publicly available data and some datasets may not be accessible on their sites at this time. Look for a notice on visible web pages.
For websites/datasets that appear to be inaccessible, here are two archives you could check:
Welcome to the research guide for Health Behavior and Health Equity , which provides detailed lists of information sources to help answer your research questions. If you've been searching for 20 minutes or longer and can't find what you're looking for, feel free to give us a call! Your informationist can: