A Louisiana statute empowering a board of health to exclude healthy persons from an infected locality, is valid and extends to persons seeking to enter the infected district whether they come from within or without the state; Compagnie Francaise de Naviga tion A. Vapeur v. Board of Health, 186 U. S. 380, 22 Sup. Ct. 811, 46 L. Ed. 1209.
State quarantine regulations established by the governor of the state on the recom mendation of a live stock sanitary commis sion are a proper exercise of the police pow er of the state; Smith v. R. Co., 181 U. S. 248, 21 Sup. Ct. 603, 45 L. Ed. 847.
The purpose of quarantine regulations against diseases is to limit its spread to the fewest possible number of persons by isolat ing persons already afflicted or exposed from all others, as far as possible. Where not exceeding nine persons were supposed to have died from bubonic plague and no liv ing persons were known to have contracted the disease, a regulation establishing a gen eral quarantine district covering twelve blocks with more than 10,000 inhabitants, which prohibits persons from entering or leaving the district, but permits free inter course In the district, cannot be upheld as a reasonable regulation ; its effect must nec essarily be to facilitate the spread of the disease among all persons confined in the district; Jew Ho v. Williamson, 103
10.
The act of congress providing for the reg ulation of animal industry is limited to cas es where the animal in question has an in fectious or contagious disease, and the Sec retary of Agriculture has no authority to prohibit the taking of a horse out of a quar antine district without first having it in spected and regardless of whether it was dis eased or had been exposed to disease; U. S. v. Hoover, 133 Fed. 950.
Where sound cattle had been destroyed by a state live stock sanitary commission, as diseased cattle, the remedy of the owner is against the commissioners individually, and not against the state; Shipman v. State, etc., Com., 115 Mich. 488, 73 N. W. 817.
See Baker, Quarantine; 47 Am. St. Rep. 540, note ; 25 Am. L. Rev. 45 ; FOOD AND