Risk Factor Identification and Incidence Rate Measurement on One High-Risk Farm as Brucellosis Precautions in Metro City Lampung

Abstract

Since 2011, Lampung is one of the Brucella-free areas, but April 2021 reported abortion case in a cow farm at Metro city Lampung Province. The purpose of this study was to identify risk factors and measure incidence levels as vigilance re-emerging Brucellosis. Sample of cow serum, taken in a census from whole cattle cow in a farm at risk, as much as 2 times with a distance about 1 month. In the first census, 703 serum samples were taken from the stables and 25 samples from the adjacent. Whole sample tested to Brucella spp with rose bengal test (RBT) and positive result confirmed with complement fixation test (CFT). The second census was conducted on samples without positive CFT results in the first census. The positive RBT at second sensus were followed by CFT and c-Elisa tests. Incidence rate of brucellosis in high-risk housing in Banjarsari Village, North Metro District, Metro City 1,67% or 2 brucellosis per 100 cows a month. Brucella spp. seropositivity was significantly related to the type of species and sex of the animal; animals with Ongole breed 4.2 times and female animals 4.5 times have a higher level of exposure compared to non-Ongole breed animals and males.