Line 56: |
Line 56: |
| *Ovine enzootic abortion | | *Ovine enzootic abortion |
| *Especially in intensive systems | | *Especially in intensive systems |
− | *Ewe lambs may acquire infection at birth, and abort in their first pregnancy | + | *Ewe lambs may acquire infection at birth and abort in their first pregnancy |
| *Infection via ingestion or inhalation causes a bacteraemia | | *Infection via ingestion or inhalation causes a bacteraemia |
| *Bacteria localise in placenta and cause placentitis, leading to late abortion or premature weak lambs | | *Bacteria localise in placenta and cause placentitis, leading to late abortion or premature weak lambs |
Line 70: |
Line 70: |
| *Venereal transmission from infected rams | | *Venereal transmission from infected rams |
| *Some immunity develops after infection, protecting ewes from subsequent disease | | *Some immunity develops after infection, protecting ewes from subsequent disease |
| + | *Live attenuated vaccines prior to breeding or inactivated vaccines during pregnancy |
| *Vaccines prevent infection but will not clear infection from persistently-infected animals | | *Vaccines prevent infection but will not clear infection from persistently-infected animals |
− | *Vaccination of ewe lambs | + | *Vaccination of ewe lambs prior to breeding |
| + | *Treatment: long-acting oxytetracyclines during an outbreak to protect in-contact pregnant ewes |
| + | *Control: isolate aborted ewes; destroy placentas, thorough cleaning |
| *Also abortion in cattle, goats and pigs | | *Also abortion in cattle, goats and pigs |
− | | + | *Serious infection in pregnant women |
| | | |
| | | |