Related by context. Frequent words. (Click for all words.) 76 whooping cough 70 Pertussis 70 pertussis 66 Swine flu 62 measles 62 Measles 62 Seasonal flu 60 Flu 59 mumps 58 chickenpox 56 swine flu 56 Cervical cancer 55 meningococcal disease 55 bacterial meningitis 55 H#N# influenza 55 mosquito borne disease 55 flu 55 meningitis 55 West Nile virus 55 influenza 54 Bird flu 54 Dengue fever 54 Norovirus 54 H#N# 54 H#N# flu 53 H#N# swine flu 53 encephalitis 53 Pneumonia 52 chicken pox 52 Lead poisoning 52 West Nile 52 H#N# influenza virus 52 Syphilis 52 highly contagious 52 Rabies 52 H#N# virus 51 swine flu virus 51 West Nile Virus 51 seasonal flu 51 superbug 50 viral meningitis 50 diphtheria 50 Flu vaccine 50 seasonal influenza 50 flu virus 50 Avian flu 50 Tuberculosis 50 Chlamydia 50 Hib 49 chlamydia 49 Childhood obesity 49 norovirus 49 Diarrhea 49 Meningitis 49 respiratory illness 49 Mad cow 49 Japanese encephalitis 49 Influenza 49 A/H#N# flu 49 H#N# strain 49 Ovarian cancer 48 Outbreaks 48 rubella 48 Swine Flu 48 Dengue 48 tuberculosis TB 48 Colorectal cancer 47 respiratory infections 47 gonorrhea 47 Malnutrition 47 Binge drinking 47 influenza virus 47 Flu shots 47 E. coli infection 47 Lyme disease 47 WNV 46 staph infections 46 Carbon monoxide 46 contagious disease 46 respiratory illnesses 46 Polio 46 polio 46 Lung cancer 46 polio virus 46 Cholera 46 pneumonia 46 bacterial infection 45 Legionnaires disease 45 virus 45 waterborne disease 45 RSV 45 tuberculosis 45 Sexual assault 45 swine flu vaccination 45 Severe weather 45 staph 45 sexually transmitted infection 45 severe diarrhea 45 infected mosquitoes 45 monkeypox 45 E coli