When can the federal government step in to control a communicable disease outbreak? Answer in under 100 words. Cite only eCFR (www.ecfr.gov) sources.
Details / How it works
The federal government's authority to step in is triggered when local or state-level disease control is inadequate to prevent interstate transmission. Once triggered, the CDC Director may:
- Apprehend and medically examine individuals reasonably believed infected;
- Quarantine, isolate, or conditionally release such individuals;
- Inspect, fumigate, disinfect, sanitize, exterminate pests, or destroy contaminated animals or articles;
- Act on behalf of the Secretary of HHS under authority of the Public Health Service Act (42 U.S.C. 264).
Diseases classified as 'quarantinable communicable diseases' are specified by Executive Order 13295, as amended, and include cholera, diphtheria, infectious tuberculosis, plague, smallpox, yellow fever, viral hemorrhagic fevers, SARS, and pandemic influenza viruses.
Numbers & thresholds
| Trigger Condition | Federal Authority | CFR Citation |
|---|---|---|
| State/territory/possession measures insufficient to prevent interstate spread | CDC Director may take measures (inspection, fumigation, disinfection, sanitation, pest extermination, destruction of animals/articles) | 42 CFR § 70.2 |
| Individual reasonably believed infected in a qualifying stage AND moving/about to move interstate | Apprehension, medical examination, quarantine, isolation, or conditional release | 42 CFR § 70.6 |
| Individual reasonably believed infected AND constitutes probable source of infection to others moving interstate | Same federal apprehension and detention powers | 42 CFR § 70.6 |
Exceptions & edge cases
Federal authority is contingent on a finding that the individual is in a 'qualifying stage' — i.e., when the disease is communicable or likely to become communicable. If medical examination results are inconclusive or temporarily unavailable, the individual may be quarantined or conditionally released; isolation applies only after infection is confirmed. Apprehended individuals must be afforded adequate food, water, accommodation, medical treatment, and communication access (including telephone access to legal counsel).
Sources
- [1]U.S. Government Publishing Office / Centers for Disease Control and Prevention — 42 CFR 70.2 — Measures in the event of inadequate local control of communicable disease · as of 2026-08-28
- [2]U.S. Government Publishing Office / Centers for Disease Control and Prevention — 42 CFR 70.6 — Federal apprehension and detention for quarantinable communicable diseases · as of 2026-08-28
- [3]U.S. Government Publishing Office / Centers for Disease Control and Prevention — 42 CFR 70.12 — Federal orders of isolation, quarantine, or conditional release · as of 2026-08-28
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