42 CFR § 71.31 - General provisions.

---
identifier: "/us/cfr/t42/s71.31"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 71.31 - General provisions."
title_number: 42
title_name: "Public Health"
section_number: "71.31"
section_name: "General provisions."
chapter_name: "PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "F"
subchapter_name: "QUARANTINE, INSPECTION, LICENSING"
part_number: "71"
part_name: "FOREIGN QUARANTINE"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Secs. 215 and 311 of Public Health Service (PHS) Act. as amended (42 U.S.C. 216, 243); secs. 361-369, PHS Act, as amended (42 U.S.C. 264-272)."
regulatory_source: "50 FR 1519, Jan. 11, 1985, unless otherwise noted."
cfr_part: "71"
---


# 71.31 General provisions.

(a) Upon arrival at a U.S. port, a carrier will not undergo inspection unless the Director determines that a failure to inspect will present a threat of introduction of communicable diseases into the United States, as may exist when the carrier has on board individual(s) reportable in accordance with § 71.21 or meets the circumstances described in § 71.42. Carriers not subject to inspection under this section will be subject to sanitary inspection under § 71.41 of this part.

(b) The Director may require detention of a carrier until the completion of the measures outlined in this part that are necessary to prevent the introduction or spread of a communicable disease. The Director may issue a controlled free pratique to the carrier stipulating what measures are to be met, but such issuance does not prevent the periodic boarding of a carrier and the inspection of persons and records to verify that the conditions have been met for granting the pratique.