H.I.V. Arrived in the U.S. Long Before ‘Patient Zero’

The virus appeared in New York as early as 1971, according to a new genetic analysis, and spread from there to San Francisco.
By DONALD G. McNEIL Jr. from NYT Health http://ift.tt/2dIUDF5
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Acquired Immune Deficiency Syndrome, Genetics and Heredity
Source The New York Times
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