Related by context. Frequent words. (Click for all words.) 78 bird flu outbreak 76 avian flu 75 bird flu 71 avian influenza 64 pandemic 63 bird flu virus 62 flu pandemic 61 outbreak 61 influenza pandemic 61 H#N# virus 61 SARS 61 H#N# bird flu 61 Bird flu 60 H#N# 60 SARS outbreak 60 Bird Flu 59 Severe Acute Respiratory Syndrome 59 swine flu pandemic 58 swine flu outbreak 57 pandemic influenza 56 H#N# strain 55 SARS virus 55 swine flu 55 pandemic flu 54 H#N# flu 54 cholera outbreak 53 H#N# swine flu 53 swine flu virus 53 epidemics 52 flu epidemic 52 Swine Flu 52 outbreaks 52 epidemic 51 Sars 51 H#N# influenza 51 dengue 50 Ebola 50 influenza 50 poultry 49 dengue fever 49 deadly H#N# strain 48 flu virus 48 flu 47 disease 47 cholera 47 West Nile virus 47 severe acute respiratory 47 communicable diseases 47 virus 47 Swine flu 46 West Nile 46 Influenza 46 mad cow disease 46 crisis 45 AIDS epidemic 45 Dengue 45 mad cow 45 poultry farms 45 infectious disease 44 calamity 44 influenza virus 44 floods 44 contagion 44 WHO 44 Tamiflu 44 flash floods 44 cholera epidemic 44 Flu 44 tsunamis 44 pandemics 43 infectious diseases 43 West Nile Virus 43 highly contagious 43 rabies 43 water borne diseases 43 malaria 43 HIV AIDS 43 measles 43 natural disasters 43 emerald ash borer 42 tidal waves 42 anti viral 42 Health Organisation WHO 42 bioterrorism 42 polio 42 tsunami 42 CWD 42 infestation 42 Health Organization WHO 41 natural calamities 41 WNV 41 FMD 41 typhoon 41 disaster 40 devastating floods 40 heatwave 40 famine 40 antiviral drugs 40 seasonal influenza 40 AIDS 40 quarantines