Fig. 4

The cumulative incidence of hemolytic E. coli shedding after insertion into the nursery unit. Figure legend: The cumulative incidence (Kaplan–Meier failure estimates) of fecal shedding of hemolytic E. coli as a function of time since insertion in the nursery unit (days) at two Danish indoor productions (A, B). The pigs were systematically sampled every second day. Failure was defined as: Rectal swabs cultured on blood agar displayed abundant growth of hemolytic E. coli-like colonies