Related by context. Frequent words. (Click for all words.) 70 influenza A/H#N# 69 A/H#N# influenza 67 A/H#N# virus 65 H#N# influenza virus 63 H#N# virus 63 A/H#N# 62 A/H#N# flu 62 avian influenza 61 avian flu 61 H#N# influenza 60 highly pathogenic avian influenza 60 H#N# avian flu 60 H#N# 60 atypical pneumonia 60 H#N# flu 60 H#N# avian influenza 60 H#N# Influenza 59 H#N# strain 59 bird flu virus 59 bird flu 59 H#N# swine flu 59 influenza 59 swine flu 58 HPAI 58 swine influenza 58 Severe Acute Respiratory Syndrome 58 swine flu virus 57 avian influenza virus 57 deadly H#N# virus 57 bird flu outbreak 56 H#N# bird flu 56 highly pathogenic H#N# strain 56 SARS 55 H#N# viruses 55 virus 55 bird flu strain 55 H#N# pandemic 55 avian flu virus 55 outbreak 55 Dengue fever 54 pandemic H#N# 54 H#N# Swine Flu 54 H#N# flu pandemic 54 Avian Influenza 54 avian influenza viruses 54 SARS virus 54 flu virus 54 influenza virus 53 Influenza 53 Avian influenza 53 pandemic influenza 53 bovine spongiform encephalopathy BSE 53 coronavirus 53 pandemic 53 H5 virus 53 tuberculosis 52 Avian flu 52 swine flu outbreak 52 tuberculosis TB 52 deadly H#N# strain 52 bird flu epidemic 52 influenza viruses 52 bird flu outbreaks 52 HFMD 51 Sars virus 51 vCJD 51 Health Organization WHO 51 Swine Flu 51 highly pathogenic 51 virulent H#N# strain 51 flu outbreak 51 enterovirus 51 swine flu epidemic 50 dengue virus 50 variant CJD 50 CDAD 50 Campylobacter 50 viral strains 50 antimicrobial resistance 50 multidrug resistant 50 Hepatitis C virus 50 flu viruses 50 mosquito borne virus 50 mad cow disease 50 H#N# Virus 50 Leptospirosis 50 Marburg virus 50 avian virus 50 virulent strain 50 dengue 50 infections 50 typhoid fever 49 meningococcemia 49 Sars 49 contagious disease 49 Health OIE 49 Bird flu 49 Mad Cow disease 49 oseltamivir 49 Health Organisation WHO 49 Tamiflu resistant