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Fig. 2 | Parasites & Vectors

Fig. 2

From: Vaccination control programs for multiple livestock host species: an age-stratified, seasonal transmission model for brucellosis control in endemic settings

Fig. 2

Time to elimination of sheep brucellosis (to <0.5 % seropositive due to infection as opposed to vaccination) after mass vaccination followed by vaccination of replacements on a mixed sheep-cattle farm. The transmission model was fit to median seroprevalence on endemic farms in a randomly sampled survey in Jordan, using the SEIR+PI structure, seasonality in lambing period and sheep-sheep and sheep-cow transmission, and an age-structure. a. A mean immune (Recovered) period of 8 months, and an infectious period of 4 months was assumed. b. A mean immune (Recovered) period of 20 months, and an infectious period of 4 months was assumed. c. A mean immune (Recovered) period of 11.5 months, and an infectious period of 0.5 months was assumed. d. The transmission model was fit to median seroprevalence on endemic farms in a randomly sampled survey in Jordan, using the SI structure, no seasonality or agestructure

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Parasites & Vectors

ISSN: 1756-3305

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