EQUINE | Equine Disease Quarterly
in Eastern Cape Province, one in Free State Province
and one in KwaZulu-Natal.
An outbreak of glanders was reported by P.R. China.
The disease was confirmed in 17 horses at an equestrian
club, one of which died.
Equine influenza was confirmed in Colombia,
Germany and the USA. The disease occurred in 16 of
32 departments in Colombia, with over 2,700 recorded
cases including one death. The German outbreak
involved five unvaccinated horses. Equine influenza
is endemic in the USA with evidence of infection
identified in three states.
Belgium, France, Germany, Ireland, Switzerland,
the UK, and the USA reported multiple outbreaks
of strangles. The number of confirmed outbreaks
ranged from two in Germany and Switzerland, three
in Belgium, 17 in France, 60 in Ireland, and 154 in the
USA. The disease is endemic in the UK and the USA.
Equine herpesvirus 1 related diseases were recorded by
Argentina, Belgium, Canada, France, Germany, Japan,
RSA, Switzerland, and the USA. Respiratory disease
was diagnosed in Belgium (11 outbreaks), France (two
outbreaks), RSA (one outbreak), and the USA (outbreaks
in numerous states). Cases of EHV-1 abortion were
reported by Argentina (one outbreak involving 15 cases
in Thoroughbreds, all with incomplete vaccination
histories), Japan, and RSA (single case in each country).
EHV-1 neurologic disease was confirmed in Canada
(two outbreaks), Germany and Switzerland (single case
in each country), and the USA (six outbreaks involving
single cases of the disease).
Equine herpesvirus 4 respiratory disease was diagnosed
in France (20 outbreaks), Germany (three cases
involving two premises), and the UK (seven outbreaks,
most of which represented single cases of infection in
30
unvaccinated horses).
Germany reported equine arteritis virus infection in a
stallion.
Equine infectious anemia was confirmed in Canada,
France, and the USA. Two outbreaks involving single
cases of asymptomatic infection were recorded by
Canada. France diagnosed a single case, and the USA
identified 17 cases involving horses in five states, the
preponderance in Texas.
The RSA reported equine piroplasmosis as occurring in
four provinces, with the majority of confirmed cases in
Gauteng Province.
Contagious equine metritis was confirmed in France
(single clinical case in a mare) and Germany (10 cases,
all in non-Thoroughbreds, the majority were Icelandic
horses; nine premises were involved.)
Ireland and the USA reported outbreaks of salmonellosis.
A total of 14 mares and foals were involved in an
outbreak in Ireland. Of 11 cases diagnosed in the USA,
nine were associated with Salmonella serogroup B
isolates.
Equine neorickettsiosis was reported by the USA. The
disease was confirmed in five states, with the highest
number of cases (26) recorded in Kentucky, of which
six died.
Clostridial enterocolitis was diagnosed in a limited
number of cases in the USA, all associated with
Clostridium perfringens infection of undetermined
toxin type.
The USA reported one case of proliferative enteropathy
(Lawsonia intracellularis infection).
• Equine Health Update •