December 2025 Observances
Please see Seasonal Resources for other public health resources.
See other months.
Please see Seasonal Resources for other public health resources.
See other months.
National Influenza Vaccination Week (Dec. 6-12)
World Aids Day (Dec 1)
American Hospital Association: 2025 United Against the Flu Fall Toolkit features content about availability of influenza vaccine for at-risk and vulnerable populations.
American Lung Association: Fight Flu Social Media Toolkit
Public Health Communications Collaborative: Communicating About Flu and COVID-19 Vaccination in 2025–26