OPEN ACCESS STUDY OF THE EPIZOOTIC STATUS OF BRUCELLOSIS AMONG VACCINATED CATTLE Mambetaly Tursumbetov, Salamat Chegirov, Baiysh Dardanov, Jailobek Orozov, Mederbek Aidarov, Klara Kursanbaeva, Meerim Omurzakova, Symbat Kasymbekova, Uken Myrzabekova, Torohan Sapash kyzy