Related by context. Frequent words. (Click for all words.) 83 chickenpox 67 mumps 66 flu 64 measles 64 pertussis 64 whooping cough 62 viral infection 62 meningitis 61 gastroenteritis 60 influenza 60 pneumonia 59 bacterial meningitis 59 strep throat 59 ear infection 58 bronchitis 57 sore throat 56 swine flu 56 fevers 56 staph infection 56 H#N# 56 respiratory illness 55 encephalitis 55 infection 55 bacterial infection 55 stomach bug 55 H#N# virus 54 diarrhea 54 H#N# flu 54 mononucleosis 53 tetanus 53 dengue fever 53 jaundice 53 staph 53 illness 53 flu virus 53 colds 52 H#N# influenza 52 virus 51 hepatitis 51 flulike symptoms 51 Flu 51 seasonal influenza 51 dengue 50 mosquito bites 50 Hepatitis 50 vaccinated 50 Swine Flu 50 seasonal flu 49 Influenza 49 rashes 49 appendicitis 49 H#N# swine flu 49 herpes 49 norovirus 49 immunizations 49 allergic reaction 48 polio 48 respiratory infections 48 tuberculosis 48 sexually transmitted disease 48 highly contagious 48 immunized 48 Lyme disease 48 eczema 48 vaccinations 47 infections 47 typhoid 47 rabies 47 ear infections 47 viral infections 47 MRSA 47 shingles 47 ailment 46 fever 46 hepatitis B 46 blisters 46 upper respiratory 46 vaccination 46 swine flu virus 46 immunization 46 allergies 45 influenza virus 45 runny nose 45 Swine flu 45 asthma 45 malaria 45 smallpox 45 flu viruses 45 leprosy 44 symptoms 44 allergy 44 sunburn 44 H#N# strain 44 bird flu 43 Hepatitis B 43 breathing difficulties 43 gonorrhea 43 Meningitis 43 illnesses 43 West Nile 43 STDs