Dear Colleague Letters
Find the latest “Dear Colleague” letters for global health observances that CDC supports.
- World AIDS DAY – December 1, 2021World AIDS DAY 2021
- Vaccines bring us closer to the people, moments, goals we care about mostWorld Immunization Week 2021
- World TB Day – March 24, 2021Message from CDC Director
Page last reviewed: March 23, 2022
Content source: Global Health