The modal herd serial interval for foot and mouth disease was estimated to be 8-10 days, with the interval lengthening from 8 days to about 2 weeks during the latter stages of the epidemic.
Observational (n=2,300)
The incubation period during this epidemic was studied using both a spectral analysis-cum-filtering method and analysis of case histories. Using spectral analysis, the modal herd serial interval was estimated to be 8--10 days based on the record of the daily number of outbreaks and an adjusted cattler series. The case histories tended to confirm these estimates but indicated that the serial interval varied considerably between species. The filtering method revealed that the herd serial interval apparently changed during the epidemic. For the first 4 weeks the interval was 8 days, while in the latter stages it was about 2 weeks.
Hugh‐Jones et al. (Fri,) conducted a observational in Foot and mouth disease (n=2,300). The modal herd serial interval for foot and mouth disease was estimated to be 8-10 days, with the interval lengthening from 8 days to about 2 weeks during the latter stages of the epidemic.
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