[Immunoglobulin deficiency syndrome and immunological deficiency syndromes].
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Current concepts on the immune system, the genesis of human T- and B-lymphocytes, and their functional properties are presented as well as current data on the pathogenesis and classification of hereditary defects of the human immune system. The main forms of immunity deficiency conditions are described. The methods for diagnosis and treatment of different forms of immunologic deficiency are substantiated. The relationship between immunity deficiency conditions and malignancies, allergic and autoimmune processes, and morphological changes in various organs and tissues is described.
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OBJECTIVE: To understand the high risk behaviors related to acquired immunologic deficiency syndrome (AIDS) and sexually transmitted diseases (STDs) among men who have sex with men (MSM) in mainland China. METHODS: A self-administrated anonymous mail survey was carried out in MSM throughout the mainland of China in 1999. RESULTS: One thousand eight hundred questionnaires were mailed out and 729 effective questionnaires were collected. The response rate was 40.5%. The average age of subjects was 31 years old. Their average age at first sexual intercourse with a man was 18.6 years old. Average number of male sexual partners were 39.2 out of which 75.7% reported having had anus-intercourse. In the latest year, 63.6% reported ever having sex with strange men, 39.8% reported ever having group sex, 9.3% reported having sold sex and 3.8% having bought sex. 50% of them reported ever having sex with women. One hundred thirty-three reported having been diagnosed STD. Sixty-two reported having tested for HIV antibody and 11 were positive. Two-thirds reported ever using a condom when having sex. CONCLUSION: High risk sexual behaviors were prevalent among MSM in mainland China with HIV infection rate already reaching a high level. Women having sex with MSM are at a greater risk of HIV infection.
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