Figure 2. Contamination with Echinococcus multilocularis shown in study plots. Portion of coproantigen-positive (by ELISA) fox feces in study plots with 5 different treatment schemes (see Figure 1). Gray outlined boxes and error bars represent the 95% confidence intervals of ELISA-positive feces during the 4 sampling periods. Treatment schemes: co/co, control/control; b1/b3, monthly/trimonthly baiting; co/b3, control/trimonthly baiting; b1/co, monthly baiting/control; and b1/b1,monthly baiting/monthly baiting.