(a) The health officer or his or her duly authorized representative shall make such investigation as in his or her judgment may be necessary to determine the presence or absence of any communicable disease and if any such be found or suspected, he or she shall adopt such measures of isolation and quarantine as are necessary for the prevention of the spread of such disease and for the relief of the patient and other members of the household, and to these ends he or she or his or her duly authorized representative may enter any premises where he or she reasonably suspects the presence of any such disease.
(b) The health officer is authorized to isolate persons ill with communicable diseases and carriers, established modification of isolation where indicated, to quarantine contacts to communicable diseases during the incubation period of such disease, to modify quarantine where indicated, and to placard premises in which persons isolated or quarantined because of communicable diseases are so isolated or quarantined.
(c) The health officer is authorized to designate the place in which persons ill with a communicable disease shall be isolated, and may order the removal of the patient thereto at public expense, and may designate the limits within which contacts to communicable diseases shall be quarantined.