[Results of active immunization against brucellosis with strain 19 in Bulgaria].
D002006:Brucellosis / Q000517:prevention & control*; D002031:Bulgaria; D006801:Humans; D014611:Vaccination
BRUCELLOSIS/prevention and control
Opiti za aktivna imunizatsiia protiv brutseloza s"s "shcham 19" v Bulgariia.