The Evolution of Deworming Strategies

By Joy Curzio, June 2024

When deworming products were first brought to market, all horses were dosed every 2 months. Rather than this strategy annihilating parasites found in horses and in the pasture, it led to widespread resistance in small strongyles (Cyathostomins), the most prevalent equine internal parasites, tapeworms, and Parascaris, a type of ascarid found in foals. Now, a more strategic targeted approach to deworming is taken, using a combination of testing to determine the heavy shedders in a herd and the types of parasites that are being shed at different times of the year.

Ask the Infectious Disease Expert | Merck Animal Health
How can I reinforce the importance of rabies vaccination among clients?

By Bryant Craig, DVM, May 2024

When people ask me about the need for rabies vaccination, I’m transported back to when I was 8 or 9 years old. My pony, Dolly, wasn’t acting herself, so the veterinarian came to check her.

How Eastern Equine Encephalitis Virus Invades Brain Cells

By Tamara Schneider, January 2024

It may be possible to set up a decoy and prevent eastern equine encephalitis (EEE) from entering the brain. Scientists predict that as the planet warms and lengthens the mosquito populations’ seasons and geographical reach, risk of infection will grow among horses and humans.

Ask the Infectious Disease Expert | Merck Animal Health
“What are the Best Disinfecting Practices to Help Mitigate Disease Spread?

By Chrissie Schneider, DVM, MS, DABVP (equine practice), cVMA, August 2023

Arguably more important than managing a disease outbreak is minimizing the chance that one occurs in the first place.

Ask the Infectious Disease Expert | Merck Animal Health
“What’s the latest equine herpesvirus information we need to communicate to clients?”

Lutz Goehring, DVM, MS, PhD, DACVIM (large animal), ECEIM (European College of Equine Internal Medicine), December 2023

Equine herpesvirus (EHV) is a complex and significant challenge in equine veterinary medicine. Common misconceptions exist that complicate its management. With clear communication, veterinarians can help clients protect their horses.

Managing Recurrent Foot Abscesses That Bug the Horse

By Marie Rosenthal MS, December 2023

Foot abscesses that continue to drain or recur are a “troublesome thing,” said Craig Lesser, DVM, CF, a podiatry specialist at Rood and Riddle Equine Hospital, in Lexington, Ky.

Can We Reduce Transmission of EIV?

October 2023

An analysis of the influenza A virus, H3N8, which spilled over from horses to dogs suggests that host population and epidemiology are driving the sustained transmission of equine influenza virus (EIV) clade FC1 among horses.