Table 1.

List of parameters

^*Value used when parameter was not varied in a simulation.

^†Based on average lactating cows longevity in a convenience sample of New York herds (from Ambulatory and Production Medicine Services, Cornell University).

^‡Based on iterative fitting of the model output to the available outbreak data.

^§Estimated value for model 1. Estimated values for models 2 and 3 in parentheses.

^ǁFaecal shedding data were fitted to equations (1), (2), and (3).

^¶Lower range value was estimated from an outbreak of Salmonella group C; Upper value was estimated from an outbreak of Salmonella group B.