[Practical aerogenic immunization of swine against plague]

A total of 3,500 pigs were immunized against hog cholera (swine fever) using an aerosol lapinized vaccine strain K, immediately after weaning the animals in the fattening sectors of two cooperative swine-breeding farms. Ordinary premises for pigs were used as chambers where the vaccine was dispersed at the rate of 10 ml per cu. m with the aid of the Soviet-made apparatuses DAG-2. This type of immunization proved effective, being well tolerated, causing troubles whatever in the treated animals. The immunity produced protected them from swine fever in the course of at least ten months, which was sufficient for the pigs in the fattening sector. This positive result is obtainable at a single aerosol treatment both for pigs of sows that have not been immunized and for pigs of sows that have regularly been immunized against hog cholera.