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Figure 2 | Veterinary Research

Figure 2

From: Modelling effectiveness of herd level vaccination against Q fever in dairy cattle

Figure 2

Temporal dynamics of the mean prevalence of shedders. (a), the mean environmental bacterial load (b) and the mean number of abortions (c) for the 4 vaccination scenarios. Scenario 1: vaccination of heifers and cows for a 10-year period (black line); scenario 2: vaccination of heifers and cows for a 3-year period with (scenario 2A - grey line) or without (scenario 2B - grey dotted line) loss of immunity one year after at the last vaccination; scenario 3: vaccination of heifers for a 10-year period (black dotted line); control: no vaccination (black thick line). Temporal dynamics of the mean prevalence of shedders (d) and mean environmental bacterial load (e) in scenario 1 with different values of p v (transition rate from SV e to I 1 V e ).

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