The author carried out an examination of brucellosis on the cattle of the State of Paraná (Brazil). In cow milk, an incidence of 7,90 percent was found, but a severe focus was located in Castro county (29,92 percent). In cattle, breaded extensively, the incidence was 16,49 percent. An higher percentage was located particular in the vicinity of the State of São Paulo, in which the livestock in general are kept on artificial pasturages. Sixty breeding farms were visited and 1716 samples of serum,sera from cattle were examined, as well as 797 sera from cow’s milk.
Brucellosis; State of Paraná; cow’s milk
