Fig. 1

Prevalence of litters shedding rotavirus from two to six weeks of age.The overall prevalence of piglets shedding rotavirus from two to six weeks of age, as well as the prevalence of infected litters in herds where the virus was demonstrated. The true and the accumulated prevalence of rotavirus at herd level is shown to the right. Significant differences (p<0.05) between groups are indicated by different letters (if underlined p<0.001)