The Horse Trust last week vaccinated 72 of its 92 residents against equine influenza to implement itsrecently updated vaccination policy.

The charity runs a sanctuary for rescued, elderly and retired working horses, ponies and donkeys in Speen,Buckinghamshire. Until now, the charity minimised the risk of equine influenza by ensuring that all new admissionswere quarantined upon arrival to monitor them for signs of influenza before they were turned out with the otherhorses, and by vaccinating any horses that were transported to shows or events.

However, after conducting a review into its current policy, the staff and trustees felt there was potentially anincreased risk to the residents at the sanctuary due to an increase in the number of outside events attended byresident horses, the admission of rescue cases and the growing number of visitors to the sanctuary.

In the past, resident horses spent their lives at The Horse Trust without being moved or transported. However, TheHorse Trust’s residents are now becoming more mobile, attending events such as the Bucks County Show, theBuckinghamshire Armed Forces Day and The London International Horse Show at Olympia.

The charity also takes in rescue cases and often little is known about their background. There is a risk that theymay have been exposed to the virus before they were rescued, but not begun to show signs of the disease. Althoughall rescue cases are quarantined, there is still a small potential risk to other residents at the sanctuary.

The number of visitors to The Horse Trust has also grown over recent years. Last year, The Horse Trust welcomedapproximately 25,000 visitors to its sanctuary; some of these are horse owners or riders, who could inadvertentlyspread the disease.

The vast majority of The Horse Trust's residents are elderly horses over the age of 20, some with compromisedimmune systems. If an outbreak of equine influenza was to occur, these older horses would potentially be moreseverely affected than younger horses.

This vaccination programme was facilitated through the support of pharmaceutical company Merial Animal Health,which provided the vaccine, and Julian Samuelson, Managing Partner of Bell Equine Veterinary Clinic and trustee ofThe Horse Trust, who is managing the vaccination programme.

"We would like to thank Merial and Julian Samuelson for their generous support and for providing the vaccine freeof charge, which has helped us to safeguard the health of our vulnerable residents," said Jeanette Allen, CEO ofThe Horse Trust.

Julian Samuelson said that in his opinion the vaccine has the best performance of all those available on themarket.

"Unique vaccine technology is used, which stimulates the immune system by mimicking natural infection. It has themost up-to-date viral strains of all the UK vaccines and is the only one with the Ohio/03 American viral strain asrecommended by the World Animal Health Organisation. I fully support this programme and this product for itsexcellent efficacy profile," said Samuelson.

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