International Breeders' Meeting
INTERNATIONAL COLLATING CENTRE
Animal Health Trust
Information Exchange on Infectious Equine Disease
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PLEASE CONTACT RICHARD NEWTON OR MAIRE O'BRIEN ON THE ABOVE NUMBER, OR E-MAIL
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Interim Report – September 2015 #5 (15.09.15)
West Nile Virus (WNV)
On the 14th September 2015, the French Ministry of Agriculture and Forestry, reported to the World Organisation for Animal Health (OIE) five new outbreaks involving five clinical cases of WNV infection in Bouches-du-Rhone among 37 susceptible animals. The affected animals presented with ataxia but only one of them was reported to have pyrexia. The farms with the affected animals are in the outskirts of the Camargue National Park. The premises have been declared infected and are subjected to the following measures: inventory of all animals of susceptible species, ban on movements of infected animals or animals suspected of having viral encephalitis, epidemiological investigation and application of authorised insecticides to equidae and premises.
UNITED STATES OF AMERICA
Equine Infectious Anaemia (EIA)
Four horses in Marshall County (Western Kentucky) have tested positive for EIA. The positive cases were pleasure horses, ranging from six to 21 years of age, that had resided on one of two farms for a number of years. Infected animals were asymptomatic and in good bodily condition. All four horses have been euthanased. Seven in-contact animals have had negative results on initial testing. They will remain under quarantine and be retested over the next 60 days.
Vesicular Stomatitis (VS)
On 11th September 2015, the USDA confirmed that VS had spread to Nebraska, with three horses meeting the case definition for the disease. This brings the number of affected states in 2015 to eight. Additional virus-positive premises have also been identified in Colorado and Utah. All new outbreaks of the disease continue to be caused by the New Jersey serotype of the virus. Totals of VS-virus positive premises for each of the eight affected states are as follows: Arizona (13 in two counties), Colorado (82 in 21 counties), Nebraska (one in one county), New Mexico (11 in 11 counties), S. Dakota (11 in five counties), Texas (three in three counties), Utah (eight in four counties), and Wyoming (17 in seven counties). Presently, 103 affected premises remain under quarantine in six states.
West Nile Encephalitis (WNE)
The number of confirmed cases of WNE in the USA increased significantly within the past week to the current national total of 38. There has been considerable virus activity in two states, Washington and Texas. Respective totals in affected states are as follows: Washington State (18 cases in seven counties), Texas (13 cases in 13 counties), Kentucky (three cases in three counties), and single cases in Oklahoma, New Mexico, Virginia and Nevada. The majority of recently affected horses had not been vaccinated or had incomplete vaccination histories.
International Collating Centre
International Collating Centre