Abortion in sheep is a major cause of loss in flocks around the UK, with serious welfare and financial implications. Whatever the scale, losses in lambing season are never welcome, but infectious causes are among the worst, with potentially catastrophic long-term implications. 
The most common infectious causes can all be harmful to humans, and pregnant women are particularly at risk, so it is very important to keep potentially infected ewes away from at risk people.

Winter Newsletter - Infectious abortion in sheep