Related by context. Frequent words. (Click for all words.) 42 viral gastroenteritis 42 Carbon monoxide poisoning 41 inhaling fumes 40 norovirus 39 smoke inhalation 39 inhaling smoke 39 fever muscle aches 39 acute gastroenteritis 39 botulism poisoning 39 CO poisoning 39 carbon monoxide poisoning 38 acute hepatitis 38 salmonella infection 38 pneumonias 38 gastrointestinal distress 38 cyanide poisoning 38 fever sore throat 37 eye irritation 37 legionnaires disease 37 febrile seizures 37 viral pneumonia 37 stomach ailments 37 norovirus outbreak 36 Salmonella poisoning 36 pesticide poisoning 36 appendicitis 35 bronchiolitis 35 meningococcemia 35 peritonitis 35 salmonella poisoning 35 carbon monoxide leak 35 pneumonia 35 hypothermia 35 requiring hospitalization 35 E. coli infection 35 gastrointestinal illness 35 Carbon Monoxide 34 hydrogen sulfide 34 viral meningitis 34 urticaria 34 hospitalized 34 respiratory illness 34 severe burns 34 cytokine storm 34 respiratory symptoms 34 scarlet fever 34 aspiration pneumonia 34 respiratory distress 34 Legionnaire disease 33 kidney dysfunction 33 radiation poisoning 33 heat exhaustion 33 dengue outbreak 33 acute bronchitis 33 tick bites 33 mild hypothermia 33 dehydration 33 menstrual pain 33 rotten egg smell 32 respiratory infection 32 carbon monoxide 32 Legionnaires disease 32 meningococcal infection 32 arsenic poisoning 32 carbon monoxide fumes 32 whooping cough 32 croup 32 flulike symptoms 32 illness 32 unattended candle 32 Antihistamines 32 mitral valve prolapse 32 cryptosporidiosis 32 kidney failure 32 legionella 32 cerebral edema 32 swine flu 32 Legionella bacteria 32 respiratory illnesses 32 respiratory irritation 32 poisonous fumes 32 chest pains 32 lung ailment 31 Hypoglycemia 31 muscle ache 31 methadone overdose 31 bacterial meningitis 31 odorless colorless gas 31 swine flue 31 morphine overdose 31 radioactive leakage 31 decompression sickness 31 difficulty breathing 31 ruptured aneurysm 31 Carbon monoxide 31 bacterial pneumonia 31 breathing difficulties 31 dehydration overheating 31 chlorine leak 31 typhoid fever 30 Legionnaires Disease