The International Collating Centre, Newmarket, England, and other sources reported the following disease outbreaks.

Contagious equine metritis (CEM) was recorded in France, Switzerland, the United Arab Emirates (UAE), the United Kingdom, and the USA. France confirmed three cases on one premises and one case on another premises. Switzerland reported Taylorella asinigenitalis from a Poitou-donkey jack. An isolated case of infection with T. equigenitalis was confirmed in a mare in the UK; this had no connection with a previously reported stallion. A nonbreeding Thoroughbred stallion tested positive for T. equigenitalis on pre-export testing in the UAE. As of September 3, the USA confirmed 22 stallions and five mares positive for T. equigenitalis. The carrier stallions were located in the following states: Georgia (1), Illinois (3), Indiana (3), Iowa (1, a gelding), Kentucky (4), Texas (1), Wisconsin (9). The carrier mares were in California (2), Illinois (2), and Wisconsin (1).

Chile reported an outbreak of equine herpesvirus-1 (EHV-1) abortion on one premises during August/September involving seven mares. Herpesvirus abortion occurred in South Africa involving 30 broodmares on five premises. Neurologic disease attributable to EHV-1 was diagnosed in seven horses in France. The USA reported an outbreak of EHV-1 myeloencephalopathy in Pennsylvania; six horses on one premises were euthanized. Isolated cases of respiratory disease, mainly caused by EH V-4, were diagnosed in France, Japan, and the UK.

Outbreaks of equine influenza were reported from France, the UK, and the USA. In France, multiple cases were diagnosed on two premises and an isolated case on a third premises. Influenza was confirmed on two premises in the UK. H3N8 equine influenza virus isolates were reported from five states in the USA