Leslie A. Tengelsen PhD DVM


Parasite

A parasite is an animal or plant that lives in or on another animal or plant (called the host). A parasite gets nourishment from its host without helping the host.

Brucellosis

Brucellosis is an infection caused by bacteria. It can be passed from animals to people. It sometimes causes long-term illness. Early in an infection, brucellosis can seem like the flu, with fever, weakness, and body aches. Brucellosis can get worse, especially if left untreated. The bacteria can attack many parts of…

Avian Influenza (Bird Flu)

What is bird flu? Bird flu is an infection caused by a certain kind of avian influenza virus. Although there are many kinds of bird flu, the most common kinds that concern health workers are H5N1 and H7N9 bird flu viruses. These viruses are found in wild birds. Most of the time, wild birds don’t get sick from the virus…

Lymphocytic Choriomeningitis

Lymphocytic choriomeningitis is an infection of the brain and spinal cord. For some people, the lymphocytic choriomeningitis virus (LCMV) causes mild flu-like symptoms or no symptoms at all. But the virus is of special concern to people with weak immune systems and to pregnant women. LCMV can infect a baby before birth…

Cutaneous Anthrax Infection

Photograph contributed by Robert Aylesworth, M.D. Cutaneous anthrax usually begins as a small, raised bump that might itch. Within 1 to 2 days, the bump develops into a painless, fluid-filled blister about 1 cm (0.4 in.) to 3 cm (1.2 in.) in diameter. Within 7 to 10 days, the blister has a black center of dying…