Related by context. Frequent words. (Click for all words.) 53 plague 53 syphilis 52 typhoid fever 52 contagious disease 52 Ebola 51 yellow fever 51 flu epidemic 50 smallpox 50 Plague 50 tuberculosis 50 H#N# virus 49 West Nile virus 49 West Nile Virus 49 virus 49 typhoid 49 swine flu 48 measles 48 rabies 48 flu virus 48 herpes 47 cholera 47 influenza 47 H#N# 47 leprosy 47 outbreak 47 epidemics 47 Swine Flu 47 West Nile 46 diphtheria 46 superbug 46 Ebola virus 46 highly contagious 46 H#N# influenza virus 46 whooping cough 46 mumps 45 Swine flu 45 contagious diseases 45 MRSA 45 disease 45 H#N# strain 45 Flu 45 swine flu virus 44 norovirus 44 gonorrhea 44 mosquito borne disease 44 chikungunya 44 monkeypox 44 avian flu 44 SARS virus 44 H#N# swine flu 44 infections 44 dysentery 44 infecting 43 SARS 43 infected 43 flu 43 bird flu virus 43 bacterial infection 43 Cholera 43 respiratory illness 43 staph 43 meningitis 43 Lyme disease 43 infection 43 bird flu 43 flesh eating 43 pandemics 43 Tuberculosis 42 anthrax 42 epidemic 42 communicable disease 42 H#N# avian influenza 42 Norovirus 42 sexually transmitted disease 42 hepatitis 42 Legionnaires disease 42 pox 42 dengue fever 42 WNV 42 bedbugs 42 H#N# influenza 42 infectious disease 42 staph infections 42 diarrhea 41 germ 41 leptospirosis 41 fungus 41 methicillin resistant Staphylococcus aureus 41 flu bug 41 H#N# flu 41 Severe Acute Respiratory Syndrome 41 Bird flu 41 outbreaks 41 chlamydia 41 encephalitis 41 Chlamydia 41 influenza pandemic 41 sicknesses 41 infestation 41 bacterial meningitis 41 chickenpox