8 Commission Report: Tuberculosis. 
(c) When the disease is extensively generalized. 
The last condition is relatively rare and may usually ‘be detected 
by physical examination. 
3. On account of the period of incubation and the fact that ar- 
rested cases may sooner or later become active, all exposed animals 
should be retested at intervals of six months to one year. 
4. That the tuberculin test should not be applied to any animal 
having a temperature higher than normal. 
s. That any animal having given one distinct reaction to tuber- 
culin should thereafter be regarded as tuberculous. 
6. That the subcutaneous injection of tuberculin is the only 
method of using tuberculin for the detection of tuberculosis in 
cattle which can be recommended at the present time. 
7. That tuberculin has no injurious effect on healthy cattle. 
RESOLUTION 3. EVIDENCE FROM TUBERCULIN TEST. 
That a positive reaction to tuberculin in any properly conducted 
test, official or otherwise, in any animal in any herd, shall be 
considered evidence sufficient upon which to declare the herd to 
be infected. 
RESOLUTION 4. COMPULSORY NOTIFICATION. 
That this Commission recommends the passage of legislation 
providing for the compulsory notification by owners and by 
veterinarians of the existence of tuberculosis in a herd, whether 
such existence be made known by detection of clinical cases or 
by the tuberculin test. 
RESOLUTION 5. LOCATION THROUGH SLAUGHTER. 
This Commission recognizes that the discovery of tuberculosis 
in animals slaughtered for food purposes furnishes one of the 
best possible means of locating the disease on the farm, and there- 
fore recommends the adoption of some system of marking, for 
purposes of identification, all cattle three years old and over 
shipped for slaughter. 
As, tuberculosis of hogs is almost invariably due to bovine 
infection, this recommendation should also be made to apply to 
hogs of any age shipped for slaughter. eee 
