The International Collating Center, Newmarket, United Kingdom, and other sources reported the following disease outbreaks in the first quarter of 2011.

Contagious equine metritis was reported from France (one case) and Germany (four cases).

Reports of equine influenza were received from France and Sweden. Eight premises were affected in France (seven of which were epidemiologically linked). The virus involved was a H3N8 strain of the Florida clade 2 sublineage. Isolated cases of the disease were confirmed in Sweden.

Extensive outbreaks of African horse sickness occurred in the northern and eastern parts of South Africa, where the disease is endemic, primarily in young, unvaccinated horses. Cases were also reported in the surveillance zone of the Western Cape