The first descriptions of AIDS cases in the scientific literature are from the early 1980s. They suggest a possible acquired immune deficiency as the underlying factor responsible for the increase of particular recurring diseases among very marginal groups of people in certain American conurbations such as New York, San Francisco and Los Angeles. All the members of these particular risk groups were identified as having health-hazardous lifestyles. The diseases were exclusively limited to the behavioral risk groups. Acquired immune deficiency syndrome, as the USA’s Centres for Disease Control (CDC) named it in 1981, was identified as a possible behavioral disease.
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