Case had been detected in September
The yard at the centre of a Strangles outbreak on the Island has been given the all clear after a thorough testing programme.
News that an animal had contracted the condition broke in September.
Strangles is a highly contagious bacterial infection of the upper respiratory tract that affects horses and other equines.
Chairman of the Manx Horse Council, Ray Cox, says the equine community has been on a watching brief since the outbreak was confirmed but they can now be fully confident it was contained to just an isolated case.
Strangles is not a notifiable disease, but given its ability to spread rapidly, owners are urged to report suspected outbreaks.
Offshore windfarm has cost almost £500k so far
No talks with UK Prime Minister over Russian spy ship
HSBC fined nearly £300K by FSA
Cannan warns of 'serious and long-term consequences' if health spend isn't brought under control
Post Office retail network 'at risk' due to removal of services says MHK