Brucellosis: Fever and United States

Topics: Fever, Pasteurization, Milk Pages: 2 (625 words) Published: February 26, 2011
Brucellosis is a bacterial disease caused by members of the Brucella genus that can infect humans but primarily infects livestock. Symptoms of the disease include intermittent fever, sweating, chills, aches, and mental depression. The disease can become chronic and recur, particularly if untreated.

Also known as undulant fever, Malta fever, Gibralter fever, Bang's disease, or Mediterranean fever, brucellosis is most likely to occur among those individuals who regularly work with livestock. The disease originated in domestic livestock but was passed on to wild animal species, including the elk and buffalo of the western United States. In humans, brucellosis continues to be spread via unpasteurized milk obtained from infected cows or through contact with the discharges of cattle and goats during miscarriage. In areas of the world where milk is not pasteurized, for example in Latin America and the Mediterranean, the disease is still contracted by ingesting unpasteurized dairy products. However, in the United States, the widespread pasteurization of milk and nearly complete eradication of the infection from cattle has reduced the number of human cases from 6,500 in 1940 to about 70 in 1994. Brucellosis is caused by several different species of parasitic bacteria of the genus Brucella. A human contracts the disease by coming into contact with an infected animal and either allowing the bacteria to enter a cut, breathing in the bacteria, or by consuming unpasteurized milk or fresh goat cheese obtained from a contaminated animal. In the United States, the disease is primarily confined to slaughterhouse workers. Scientists do not agree about whether brucellosis can be transmitted from one person to another. Some people have reportedly been infected with the disease through blood transfusion or bone marrow transplant. Newborn babies have also contracted the illness from their mothers during birth. It is believed that brucellosis can also be transmitted sexually. The...
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