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Table 1 Extinction rate and mean time to extinction for each of the vaccination scenarios

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

Criteria

Scenario

 

Control

1

1

1

2A

2B

3

  

p v = 0.05 p

p v = 0.21 p

p v = 0.9 p

   

Extinction rate

0.00

1

0.97

0.84

0.08

0.43

0.95

Median time to extinction

-

week 272

week 312

week 390

week 138

week 276

week 348

  1. Control: no control programme; scenario 1: vaccination of heifers and cows for a 10-year period; scenario 2: vaccination of heifers and cows for a 3-year period with (scenario 2A) or without (scenario 2B) loss of immunity one year after the last vaccination; scenario 3: vaccination of heifers for a 10-year period