ABSTRACT


DRA. MARTA RIVAS R. Y DR. RAUL VALENZUELA C.1
 

M. tuberculosis was detected in two samples of butter from a lot of 54 samples, by inoculation of guinea pigs. Thirty two samples were of pasteurized butter and twenty two of crude butter. The two cases of contamination with tubercle bacillus came from crude samples. All the pasteurized samples gave negative results.
One sample of small cheese presented M. tuberculosis when fifty samples of small cheese were examined.
These results indicate the need for stricter sanitary rules in connection with milk used in the manufacture of butter and cheese.

Keywords:
1 Funcionarios de la Sección tuberculosis. Instituto de Investigaciones Veterinarias, Ministerio de Agricultura