Table 2.

Potential animal-associated infections among individuals with HIV infection

Agent	Frequency in HIV patients	Sources	Likely animal sources	Likelihood of infection from contact with horse
Toxoplasma gondii	Common	Undercooked meats, unwashed produce, soil while gardening	Cats	None
Cryptosporidium	Moderate	Water, people, direct animal contact	Farm animals	Rare
Cryptococcus neoformans	Moderate	Soil, bird droppings	Birds	None
Salmonella	Moderate	Foods of animal origin, contaminated vegetables, direct animal contact	Reptiles, farm animals, cats	Moderate
Campylobacter	Low	Poultry, other meats of animal origin, raw milk, direct animal contact	Dogs, cats, farm animals	Rare
Bartonella henselae	Low	Cats	Cats	None
Giardia lamblia	Low	Person to person, water	Wild animals, dogs	None
Rhodococcus equi	Rare	Soil	Horses, pigs	Rare
Listeria monocytogenes	Rare	Soft cheeses, hot dogs, delicatessen meats, raw milk	Farm animals	Rare

Data from Angulo FJ, Glaser CA, Juranek DD, Lappin MR, Regnery RL. Caring for pets of immunocompromised persons. J Am Vet Med Assoc 1994;205:1711–8; and Glaser CA, Angulo FJ, Rooney JA. Animal-associated opportunistic infections among persons infected with the human immunodeficiency virus. Clin Infect Dis 1994;18:14–24.