Print page content Print
Increase text size Decrease text size
Text Size

What is Leptospirosis?


Equine leptospirosis is a costly and underdiagnosed disease that can affect the entire equine industry. A recent nationwide study showed 75% of healthy horses were exposed to at least one leptospiral serovar.1

Video: What is Leptospirosis?

Leptospirosis is a bacterial infection caused by spirochetes belonging to Leptospira spp. Leptospira interrogans serovar Pomona, known as L. pomona, is most often associated with leptospirosis infections in horses in North America.2

L. pomona can colonize in the kidneys, be shed in the urine and cause horses to become septicemic.2 The bacteria are then circulated in the blood and can cause uveitis, or moon blindness (the most common cause of blindness in horses), as well as abortions and kidney failure. Kidney failure, especially in yearlings, can occur with renal infection associated with leptospirosis.1-3

Horses can become infected with leptospires through contact with urine from wildlife, cattle and dogs. Standing water and rainfall can pose an increased risk.

A recent study shows 75% of healthy horses have been exposed to at least one leptospiral serovar.1
Horses can become infected with leptospires through contact with wildlife, cattle and dogs.

LEPTO EQ INNOVATOR® is the first and only leptospirosis vaccine for horses.

Now you can help protect your horse with LEPTO EQ INNOVATOR®, the first and only equine vaccine to help prevent leptospirosis. LEPTO EQ INNOVATOR helps prevent leptospiremia caused by L. pomona, which could, but has not be demonstrated to, help reduce the potential risk of equine recurrent uveitis (ERU) infections, abortions or acute renal failure caused by L. pomona.*

*Currently, there are no vaccines available with USDA-licensed label claims against equine abortions, uveitis or acute renal failure due to L. pomona.




Mon–Fri, 8:30am–6:30pm ET

This site is intended for U.S. Animal Healthcare Professionals. The product information provided in this site is intended only for residents of the United States. The products discussed herein may not have marketing authorization or may have different product labeling in different countries. The animal health information contained herein is provided for educational purposes only and is not intended to replace discussions with an animal healthcare professional. All decisions regarding the care of a veterinary patient must be made with an animal healthcare professional, considering the unique characteristics of the patient.

All trademarks are the property of Zoetis Services LLC or a related company or a licensor unless otherwise noted. ©2022 Zoetis Services LLC. All rights reserved.