| External transmission: M. hyo-negative herd |
| The risk of infection spreading to a M. hyo-free herd is dependent on a range of factors: |
 |
Proximity to a M. hyo-positive herd (source) |
 |
|
|
General pig density in the area |
|
|
|
Proximity to roads regularly used by pig transporters |
|
|
|
Number of different origins of the pigs in the herd |
|
|
| If multiple factors converge, the risk of an infection increases. M. hyo-free herds are usually infected by acquisition of positive animals. However, other methods of transmission are also possible. Cold, wet conditions in particular encourage an increased risk of infection as then, airborne transmission can occur up to a distance of 3.2 km. |
|
© 2006 Boehringer Ingelheim Ltd UK. All rights reserved. Company Registration Number: 711858
Access to and use of this website is subject to our Terms of use which users are deemed to accept by accessing this website.
Any queries concerning the design of the site please send an email to the webmaster. |
|
|
|
The pathogen can be introduced from outside the herd or can be transmitted within the herd. Studies have demonstrated that infection with M. hyo does not generally occur before nine weeks of age. |
|
|
