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Table 1 Details of the transmission model

From: Breeding with resistant rams leads to rapid control of classical scrapie in affected sheep flocks

Status change of individuals: Probability per unit of time:
Susceptible → infected g γ (a)λ
with 0 ≤ g γ (a) ≤ 1.
present → removed (non-infected animals) 1 S ( a ) d S d a ( a ) ,
present → removed (infected animals) 1 S ˜ γ ( a ) d S ˜ γ d a ( a )
  1. The symbols used are defined in Table 2.