Veterinary assistants and laboratory animal caretakers look after animals in laboratories, animal hospitals, and clinics. They care for the animals by performing routine tasks under the supervision of scientists, veterinarians, and veterinary technologists and technicians.
Dysentery is an inflammation of the intestine causing diarrhea with blood. Other symptoms may include fever, abdominal pain, and rectal tenesmus (a feeling of incomplete defecation).
There are two major classifications of dysentery: bacillary and amebic, caused respectively by bacteria and by amoebas. Bacillary dysentery, or shigellosis, is caused by bacilli of the genus Shigella. Symptomatically, the disease ranges from a mild attack to a severe course that commences suddenly and ends in death caused by dehydration and poisoning by bacterial toxins.