(a)

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Shick test--for diphtheria

(b) Dick test-—-for scarlet fever

(c)

Skin test—for smail-pox

Artificial Immunization

Some of our most valuable defensive hygiene measures are based upon
methods of producing immunity artificially.

(a)
(»)

Virus--material contcining live organisms
Vaccine or bacterin--contains dead organisms.

Some of the diseases for which we have immnizing methods:

(a)
(b)
(c)
(a)
(e)
(f)
(g)
(h)
(i)
(3)

Diphtheric-—toxin-antitoxin and antitoxin
Tetanus—~-antitoxin

Ravies—-attenvated virus

Epidenic Meningitis--immne serum
Typhoid fever-—bacterin

Scarlet fever-—-—toxin-antitoxin

Small pox-—-attenuated virus

Plague— bacterin

Cholera-——bacterin

Measles——convalescent serum

VII. DEFENSIVE HYGIENE OF COMMUNICABLE DISEASES

In the study of the methods of controlling cammuniceble diseases, the
American Public Health Association has decided that in order to effectively

(a)
(b)
(c)
(a)
(e)
(f)

control a disease we should have the following informtion about it:

Infectious agent

Source of infection

Mode of transmission
Incubation period

Period of cammnicability
Methods of control

1. The infected individual ond his environment.
{1) Recognition of disease
(2) Isolation
(3) Immonization
{4} Disinfection

2. Genéral Measures

Diseases by Sources of Infection

One of the most valuable classificatims of communicable disease is
the one mde with reference to the source of the infecting organisms.

{a)

Diseases Spread by Intestinal Discharges

1. Typhoid fever
2. Cholera

3. Dysentery

4, Food-poisoning
5, Hookeworm