The International Collating Center, Newmarket, England, and other sources reported the following equine disease outbreaks for the first quarter of 2015:

The final cases in the 2014-15 vesicular stomatitis outbreak in the United States were reported early in the first quarter of 2015. Two horses on a premises in southern Arizona were both infected with the New Jersey serotype of the virus.

One case of glanders was confirmed in Germany. There was no evidence of spread of infection to other horses on the index premises. The source of infection remains undetermined.

Outbreaks of strangles were reported by Denmark, France, Germany, Ireland, and the United States. Denmark confirmed an isolated case of the disease. Fourteen outbreaks were diagnosed in France, involving primarily Thoroughbreds and Warmbloods. Germany and the United States reported that strangles was endemic. The disease was considered widespread in Germany, and at least 16 states in the United States recorded outbreaks, with multiple cases confirmed on premises in Kentucky, Maryland, and South Carolina.

Equine influenza was reported by France, the United Kingdom (UK), and the United States. Three outbreaks were confirmed in France and five in the UK. The United States reported influenza as endemic, with outbreaks diagnosed in Kentucky (two), Michigan (one), and South Dakota (one).

Equine herpesvirus-1 and -4 (EHV-1 and EHV-4) related diseases were recorded in France, Germany, Ireland, Japan, Switzerland, the UK, and the United States. Respiratory disease was confirmed in France (five outbreaks), Ireland (12 cases), Switzerland (undefined number on several premises), the UK