N |
Number of pigs per pen |
25 |
[10] |
PensPerSide |
Number of pens on either side of a corridor |
20 |
[10] |
β |
Infection rate |
Assume
|
– |
|
The rate at which a pig ceases to remain infectious (day−1) |
= 0.03846 |
[13,14] |
|
The rate at which a carrier becomes re-infectious (day−1) |
= 0.00926 |
– |
|
The rate at which a pig ceases to carry the bacteria (day−1) |
= 0.01667 |
[14] |
|
Loss of immunity (day−1) |
0.5 |
– |
λ |
Shedding rate (cfu day−1) |
|
[15,16] |
|
Proportion of cfu present ingested (day−1): Slatted |
|
[17,16] |
|
Solid |
|
|
l |
Bacteria death rate (day−1) |
= 0.01190 |
[18] |
p |
Probability of infection from bacterial consumption |
|
[19,13] |
α |
Cross infection rate |
Assume
|
– |
π |
Proportion of faeces that remains in a room |
0.4 |
– |
q |
Proportion of faeces that remains present after cleaning |
0.1 |
– |
|
Time spent in unit (days) |
108 |
[20] |
|
Airborne infection rate |
Assume
|
– |