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The first indication of new disease – Acquired Immunodeficiency Syndrome (AIDS) began, when reports came from great cities of USA (New York, Los Angeles, San Francisco) of a sudden increase in the incidence of two very rare diseases, 5 cases of Pneumocystis carinii pneumonia in 8 months in young homosexuals and 26 cases of Kaposi’s sarcoma in 30 months, rendering individuals vulnerable to infections and malignancies.

#immunology#microbiology#virology

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