Hide caption Show caption Researchers at the School of Public Health, LKS Faculty of Medicine of The University of Hong Kong (HKUMed), in collaboration with Duke-NUS Medical School (Duke-NUS) and St. Jude Children’s Research Hospital (SJCRH), retraced the natural avian-to-mammalian evolutionary process of the European avian-like H1N1 (EA) swine influenza viruses that jumped species in the late 1970s.