Fuente: WIPO "milk" Immunological milk containing specific antibodies is obtained by injecting dairy animals with graded doses of a killed vaccine having essentially the following organisms per cubic centimetre: Escherichia coli 200 million; Streptococcus vividans 200 million; Diplococcus pneumonial 200 million; Staphylococcus aureus 300 million; Staphylococcus albus 300 million; and when the serum separated from a sample of the blood of the animal shows a titre of not less than 1 : 40 in agglutination of the bacteria of the vaccine, milking the animal and subjecting the milk to pasteurization and, if desired, to freeze drying. The animal may be given at least four subcutaneous injections of the vaccine at weekly intervals. The milk may be used for treating diseases of bacterial origin in humans and animals.