Related by context. Frequent words. (Click for all words.) 52 Poinar 49 McGeer 47 Paabo 47 Mascola 47 De Cock 47 Quinlisk 46 Longrich 46 Tauxe 44 clades 44 Fauci 44 virologists 43 pandemic H#N# virus 43 Derocher 43 Lubroth 43 retroviruses 43 P. falciparum 43 hominins 43 virulent strain 42 retrovirus 42 Bekedam 42 Bossart 42 Stohr 42 Toxoplasma 42 Osterhaus 42 lineages 42 phylogeny 42 Ebola 41 Rothberg 41 Ehresmann 41 viral strains 41 mutant strain 41 SARS coronavirus 41 Niman 41 Tierno 41 avian influenza viruses 41 Hueter 41 Institut Pasteur 41 Anthony Fauci director 41 genetic sequences 41 virologist 41 paleoanthropologist 40 simian immunodeficiency virus 40 Wolbachia 40 H#N# viruses 40 Nabel 40 rhinoviruses 40 DeWoody 40 Piot 40 influenza viruses 40 Kawaoka 40 virulent strains 40 Swidler 40 Ebola virus 40 anatomically modern 39 mitochondrial genome 39 clade 39 Raviglione 39 Schabas 39 Osterholm 39 Infectious disease 39 infecting humans 39 common ancestor 39 genetic sequencing 39 Schuchat 39 Jaenisch 39 serotype 39 Neandertals 39 virus 38 Neanderthal DNA 38 Heymann 38 mutation 38 Pasteur Institute 38 multidrug resistant 38 Lipkin 38 Gurwitz 38 Epidemiologists 38 Bochner 38 Predy 38 chytrid fungus 38 Ebola outbreak 38 Bargmann 38 causative agent 38 Wormser 38 yellow fever 38 H#N# avian flu 37 epidemiologists 37 gene sequences 37 respiratory viruses 37 Denisovans 37 virus infects 37 Gerberding 37 deadly Ebola virus 37 Anne Schuchat 37 genomes 37 Weil 37 Anthony S. Fauci 37 Ostroff 37 Anthony Fauci 37 molecular biologists 37 epidemiological 37 single celled organisms