Executive Order 13674: Revised List of Quarantinable Communicable Diseases
President: Barack Obama
Broadened the quarantinable category for severe acute respiratory syndromes to cover dangerous emerging respiratory diseases.
Status: In effect.
Is Executive Order 13674 still in effect? Yes. Active amendment to the federal quarantine disease list, later supplemented by EO 14047 adding measles.
What does Executive Order 13674 do?
EO 13674 amended EO 13295 by defining severe acute respiratory syndromes broadly enough to cover diseases capable of person-to-person spread that could cause a pandemic or serious mortality or morbidity. That formulation supported federal quarantine authority during emerging respiratory outbreaks. It remains part of the list, which EO 14047 supplemented in 2021 by adding measles.
Before and after
Before the order
The list referred more narrowly to SARS as a named disease.
After the order
The category could encompass new severe respiratory syndromes meeting defined transmission and severity criteria.
Who had to do what
| Agency / office | Action | Timing / position |
|---|---|---|
| HHS and CDC | Exercise quarantine powers when legal criteria are met | Continuing |
| President | Amend the disease list on HHS recommendation | Continuing |
| Individuals | Comply with valid isolation or quarantine orders | Case-specific |
What happened next
EO 13295 established the modern list.
EO 13674 broadened the respiratory category.
EO 14047 added measles.
Legal and source detail
How it works legally
Sections 361–365 of the Public Health Service Act and 42 CFR parts 70 and 71 govern quarantine, subject to constitutional due process and judicial review.
Sources by type
If a source is unavailable, first check the cited publisher or another official repository. The cited publisher remains the authority.
Primary and official sources
Orders, laws, court records and official implementation material.
- CDC — quarantine legal authorities (opens in a new tab) Official record
- eCFR — 42 CFR parts 70 and 71 (opens in a new tab) Official record
How we checked this
Last checked against the sources above on September 15, 2026. How we research →