140 ESSENTIALS OF VETERINARY LAW 
deciding when quarantine must be established or 
removed, and the style of quarantine to be adopt- 
ed, is one which implies discretion and considera- 
tion. This cannot be delegated. But the board 
or other health authority can employ the services 
of an officer or private citizen to carry out the 
methods and acts which the proper health author- 
ity directs. It is not to be presumed that the 
officer or board would personally maintain the 
quarantine.”® 
105. What Diseases Quarantinable. Any infec- 
tious disease, propagated by means of bacteria or 
protozoa, is subject to quarantine, whenever the 
welfare of the community demands such action. 
Quarantine is never justifiable where its mainte- 
nance does not restrict the disease. Cholera is 
an infectious disease due to the action of a specific 
bacillus, but in the light of the present knowledge 
a quarantine which simply prohibited the entrance 
or exit of persons from the premises would not be 
considered as proper quarantine. Yellow fever is 
a better illustration. Malaria was not formerly 
considered subject to quarantine, but with our 
present knowledge, even in the absence of special 
laws relative to that disease, a quarantine would 
be justifiable under certain conditions. It would 
not be justifiable in a community in which there 
were no anopheline mosquitoes, for there the 
quarantine would be useless, and therefore un- 
reasonable. It therefore follows that quarantine 
is not an invariable method of restricting disease. 
25 Breckenridge Co. v. Me- 
Donald, 154 Ky. 721, 159 8. W. 
549. 
