Lecture.35 - 12/5/2008 Biology 207, 2008 05 December 2008...

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12/5/2008 1 Biology 207, 2008 05 December 2008 – Lecture thirty-five AIDS and HIV – a person-to-person disease For information on Ebola virus, check out the CDC web site: http://www.cdc.gov/ ncidod/dvrd/spb/index.htm Acquired immunodeficiency syndrome (AIDS) a viral disease that attacks the immune system causative agent – human immunodeficiency virus (HIV) recognized as a distinct disease in 1981 in the U.S., ~ 1 million cases reported, more than 500,000 deaths worldwide, more than 25 million deaths Fig. 33.7 Highest incidence of AIDS – sub-Saharan Africa Acquired immunodeficiency syndrome (AIDS) HIV attacks the immune system first recognized as a disease of the immune system due to large number of opportunistic infections in patients (typically only seen in patients with immune system problems) opportunistic infections associated with AIDS fungal diseases – ex., candidiasis protist disease – Pneumocystis carinii pneumonia bacterial diseases – ex., pulmonary tuberculosis ( Mycobacterium ) viral diseases – ex., cytomegalovirus atypical cancers – ex., Kaposi’s sarcoma (cancer of the cells lining the blood vessels) foot with lesions of Kaposi’s sarcoma ankle with lesions of
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Lecture.35 - 12/5/2008 Biology 207, 2008 05 December 2008...

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