Potential Impact of Foot-and-Mouth Disease in California APPENDIX B KEY PARAMETERS OF THE EPIDEMIOLOGICAL MODEL

• Infectious period. The infectious period has been found to be correlated with type and herd size, husbandry practices, and whether the disease is allowed to run its course, or whether controls are applied lesions (Garner, 1992; Donaldson, 1994a; Sanson, 1994; Sellers and Daggupaty, 1990; Willeberg et al., 1994). If depopulation is not applied, the infectious period for cattle can last between one and nine weeks; for pigs, between 10 to 17 days. If depopulation is applied on the same day the disease is diagnosed or the next, the infectious period can be expected to last four days.