HIV’s Patient Zero exonerated : Nature
▻http://www.nature.com/news/hiv-s-patient-zero-exonerated-1.20877
But an analysis of HIV using decades-old blood serum samples exonerates the French Canadian [Gaétan Dugas], who died in 1984. The paper, published on 26 October in Nature, shows that the virus had been circulating in North America since at least 1970, and that the disease arrived on the continent through the Caribbean from Africa.
Richard McKay, a historian at the University of Cambridge, UK, and study co-author, says that scientists have always questioned the idea of a single #Patient_Zero, because some evidence suggested that the virus entered North America several times.
(...) When scientists examined those genetic sequences in detail, they found them to be similar to HIV strains present in the Caribbean, particularly Haiti, in the early 1970s. However, the strains were different from one another, suggesting the virus had already
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