bill of health

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A certificate stating whether there is infectious disease aboard a ship or in a port of departure, given to the ship's master to present at the next port of arrival.
• noun An attestation as to condition, especially a favorable one.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A certificate stating whether or not there is infectious disease aboard a ship or in a port of departure, given to the ship's master to present at the next port of arrival

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a certificate saying that a departing ship's company is healthy (to be presented at the next port of arrival)