Related by context. Frequent words. (Click for all words.) 59 avian virus 57 avian influenza viruses 53 highly pathogenic 52 H#N# strain 51 H#N# viruses 49 lethal H#N# strain 49 influenza viruses 48 H#N# avian influenza 48 flu viruses 48 highly pathogenic H#N# strain 48 hemorrhagic fever 48 genetically distinct 47 coronavirus 47 H5 strain 47 avian influenza virus 47 easily transmissible 47 reassortment 47 infecting humans 47 highly pathogenic avian influenza 47 clade 46 interbred 46 H5 virus 46 serotypes 46 influenza virus 46 H#N# avian flu 46 monkeypox 46 shigella 46 pathogenicity 46 haplotypes 45 bird flu virus 45 swine influenza 45 Monkeypox 45 bird flu strain 45 avian influenza 45 H#N# bird flu 45 SARS coronavirus 45 infect humans 45 serotype 45 flu strains 45 lineages 44 wild fowl 44 swine flu virus 44 deadly H#N# virus 44 avian flu virus 44 influenza 43 multidrug resistant 43 virulent H#N# strain 43 adenoviruses 43 transmissible 43 chickens ducks 43 mammalian species 43 virulent strain 43 HPAI 43 flu virus 43 Tamiflu resistant 43 interbreeding 42 avian flu 42 theropods 42 mycoplasma 42 subtypes 42 influenza strains 42 flus 42 mycobacteria 42 pathogenic 42 deadly H#N# strain 42 H#N# 42 dengue virus 42 prion disease 42 subtype 42 hemagglutinin 41 contagion 41 Severe acute respiratory 41 H5 41 Avian influenza 41 civets 41 P. falciparum 41 enterovirus 41 A/H#N# virus 41 H#N# virus 41 viral strains 41 Salmonella infection 41 Shigella 41 coli 41 viruses 40 Vibrio 40 amantadine 40 respiratory viruses 40 A/H#N# 40 subspecies 40 bird flu 40 pandemic H#N# 40 Rift Valley fever 40 Flu viruses 40 Salmonella infections 40 Neandertals 40 mammal species 40 genetic diversity 40 adobo 40 virologists 40 bird flu outbreaks 40 West Nile encephalitis