Figure 1

Predicted HEV prevalence in faeces according to animal age. The virological prevalence data (faecal shedding or presence in livers) depending on age (obtained from 31 published studies) were used to construct a meta-regression (generalised linear mixed-effect model) taking into account the respective weights of publications calculated using the inverse of the sum of inter-study and intra-study variance for a given age category. The mean predicted response of the model (black line) and its confidence interval (red dashed lines) are presented in this figure. The size of the points is proportional to the weight of the study.