West Nile Virus Vaccine: Adverse Effects in Mares?

Allegations that the West Nile virus vaccine might have caused abortions and deformed foals were made in a May 30 Denver Post article. Mare owners calling themselves the “Lost Foals Group” claim the vaccine has caused up to 1,200 abortions and nearly 300 deformed or dummy foals. However, top veterinarians dispute those allegations based on their experiences.

Tom Riddle,

Share
Favorite
Close

No account yet? Register

ADVERTISEMENT

Allegations that the West Nile virus vaccine might have caused abortions and deformed foals were made in a May 30 Denver Post article. Mare owners calling themselves the “Lost Foals Group” claim the vaccine has caused up to 1,200 abortions and nearly 300 deformed or dummy foals. However, top veterinarians dispute those allegations based on their experiences.

Tom Riddle, DVM, of Rood and Riddle Equine Hospital in Lexington, Ky., said, “I can tell you that my practice has vaccinated thousands of mares with the West Nile virus (WNV) vaccine and we have seen no relationship between the vaccine and abortions. My suspicion with the problem that is reported in the Denver paper is that the vaccine is incidental to the abortions and not related to it

Create a free account with TheHorse.com to view this content.

TheHorse.com is home to thousands of free articles about horse health care. In order to access some of our exclusive free content, you must be signed into TheHorse.com.

Start your free account today!

Already have an account?
and continue reading.

Share

Written by:

Stephanie L. Church, Editorial Director, grew up riding and caring for her family’s horses in Central Virginia and received a B.A. in journalism and equestrian studies from Averett University. She joined The Horse in 1999 and has led the editorial team since 2010. A 4-H and Pony Club graduate, she enjoys dressage, eventing, and trail riding with her former graded-stakes-winning Thoroughbred gelding, It Happened Again (“Happy”). Stephanie and Happy are based in Lexington, Kentucky.

Related Articles

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from TheHorse.com

Sponsored Content

Weekly Poll

sponsored by:

Where do you primarily feed your horse?
276 votes · 276 answers

Readers’ Most Popular

Sign In

Don’t have an account? Register for a FREE account here.

Need to update your account?

You need to be logged in to fill out this form

Create a free account with TheHorse.com!