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2014-08-25T03:34:50Z

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For the Menangle virus outbreak in an Australian piggery in 1997, temporal patterns were analysed on a weekly basis, because many piggery records are maintained as weekly averages and the epidemic extended over a >20-week period. In addition to the percentage of affected litters per week, average litter sizes and numbers of piglets that were live, mummified or stillborn were plotted, providing a comprehensive picture of the temporal pattern. All indices showed a very rapid rise from week 15 (of the calendar year), when the outbreak started, to week 21, when case numbers peaked. This pattern is strongly suggestive of a propagating epidemic with a rapidly spreading agent and relatively short incubation period (see Figure 2 from Love, et al., Australian Veterinary Journal 79(3):192-198, 2001 for a graphical representation of these patterns).}}

Translations:Advanced Field Epi:Manual 1 - Disease Investigation/87/en - Revision history

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