CDC's Behavioral Risk Factor Surveillance System data are gone. These are health surveys that collect data on health risk behaviors (tobacco use, HIV knowledge), preventive health practices, & health care access primarily related to chronic disease and injury. The survey was established in 1984.

List of CDC information that appears to have been taken down so far:
1. CDC Atlas
2. CDC Youth Risk Behavior Surveillance System
3. HRSA Target
4. Language removed for LGBT work
5. CDC Social Vulnerability Index