Diseases with Horse-to-Human Transmission

an infected horse. Some horses are carriers that do not show any signs of disease but can actively transmit the organism. Carriers can become sick when under stress from surgery transportation changes in feed etc. Severe cases can be fatal if not treated.
Transmission People that work around horses can get salmonella by touching contaminated surfaces and accidentally transferring the bacteria from their hands to their mouths.
Humans Many people show no symptoms of salmonella infection. Others may develop fever abdominal discomfort and diarrhea. Clinical disease can be mild or severe and severe cases can be fatal if not treated.
Treatment and prevention In humans most cases resolve even without treatment. In horses nonsteroidal antiinflammatory drugs NSAIDs may be used to alleviate pain and gastrointestinal protectants such as biosponge or activated charcoal may bind the bacterial toxin. Severe cases may require treatment with IV fluids and electrolytes. Since the organism is prevalent in the environment prevention of salmonellosis is difficult. Identification of infected horses and strict biosecurity protocols are the best approach to preventing the spread of the disease.
LESS COMMON CONDITIONS
Conditions that are less commonly passed from horses to humans but still warrant appropriate biosecurity precautions are
Campylobacteriosis
Bacterial species in the genus Campylobacter can cause irritation and inflammation of the stomach and intestines gastroenteritis in animals and humans. In fact it is globally the most common bacterial cause of gastroenteritis.
Horses Infections in horses cause inflammation of the small intestine enteritis which leads to diarrhea.
Transmission The bacteria are typically transmitted through fecal contamination of the environment and subsequent ingestion through food or water. People can become infected through horserelated activities including cleaning stalls and grooming. However you are more likely to be exposed to Campylobacter in uncooked or undercooked chicken or unpasteurized milk
Humans Symptoms in humans include abdominal pain diarrhea nausea fever and vomiting.
Treatment and prevention Antibiotics may be used to treat infected individuals. Campylobacter infection is rarely life threatening.
Cryptosporidiosis 
Parasites in the genus Cryptosporidium are an important source of gastrointestinal disease in humans and animals globally. These highly contagious parasites infect the intestine and cause diarrhea and weight loss.
Horses Cryptosporidiosis is most commonly seen in foals especially those that are immunocompromised or stressed. Horses become infected by ingesting the parasite in contaminated food or water.
Transmission The parasite can be transmitted from horses to humans in contaminated water soil or surfaces and can survive in the environment for long periods.
Humans In humans ingestion of the