Schematic diagram of the batch level simulator of the risk assessment model. Modules are denoted by pink coloured boxes with the blue boxes denoting the set of corresponding input parameters \(\theta = \{\theta^{\rm farm}, \theta^{\rm cheese}, \theta^{\rm con}, \theta^{\rm post}\}\) and the orange boxes denoting the outputs, namely, milk loss per batch \(M^{\rm batch}\), probability of rejecting a particular batch \(P^{\rm batch}\) and batch risk \(R^{\rm batch}\).