A litter of puppies from a breeding operation in New York developed the clinical manifestations of Neospora caninum shortly after their adoption at 8 weeks old. The attending veterinarian submitted...

A dairy farm in New York, milking 750 cows, in October 2024, experienced flea infestation in young calves. Seventy calves, fed a milk diet, were housed in individual hutches on gravel with chopped...

Updated February 24, 2025

The current highly pathogenic avian influenza (HPAI) H5N1 outbreak has caused unprecedented mortality in wild and domestic poultry, and illness and death in a variety of...

Accidental ingestion of Japanese yew (Taxus cuspidata) led to the sudden death of four New England beef cattle in late January 2024. These four cows were noted to be apparently healthy until...

During the summer of 2023, the Animal Health Diagnostic Center (AHDC) diagnosed several cases of clostridial myositis (blackleg) in dairy heifers on farms throughout the northeastern U.S. One...

The Cornell Animal Health Diagnostic Center (AHDC) has recently received multiple reports from veterinary practitioners across the country regarding increased incidence of canine respiratory...

Eastern equine encephalitis (EEE) virus and West Nile virus (WNV) are two zoonotic, mosquito-borne viruses that cause fever and neurologic disease in equids. Birds are the reservoir host for both...

A small animal veterinarian requested a consultation regarding treatment options for a dog (signalment unknown) with chronic tapeworm infection. The dog did not display any clinical signs, but...

Two herd outbreaks of lead toxicosis occurred in beef cattle in New York in May and June, 2023.

Three angus cattle in the first herd developed bruxism, blindness and seizures after gaining...

The Cornell Animal Health Diagnostic Center diagnosed about 20 cases per year of Listeria monocytogenes (L. monocytogenes) infection by culture or PCR, for the past four years (Figure 1). Most...