Related by context. Frequent words. (Click for all words.) 55 smallpox epidemic 53 diphtheria 52 polio epidemic 49 cholera epidemics 47 Diphtheria 47 influenza epidemic 47 polio outbreak 47 measles epidemic 47 Flu pandemic 46 meningitis outbreak 46 flu epidemic 45 bubonic plague 45 typhoid fever 45 deadly cholera epidemic 45 Distemper 45 haemorrhagic fever 45 smallpox 44 mosquito transmitted 44 Sierra Maestra mountains 44 Bubonic Plague 44 Typhoid fever 44 Spanish conquistadors 44 typhus 44 curable diseases 44 Hantavirus 44 Kala azar 44 Bubonic plague 43 Parvovirus 43 Ebola hemorrhagic fever 43 meningitis epidemic 43 parasitic disease 43 Irish potato famine 43 Shining Path guerrillas 42 scarlet fever 42 Buruli ulcer 42 Black Plague 42 zombie plague 42 small pox 42 Nazis invaded 42 Chosin Reservoir 42 poliomyelitis 42 Volcano erupts 42 yellow fever 42 measles outbreaks 42 rinderpest 42 Salk vaccine 42 Rocky Mountain Spotted Fever 42 measles 41 mutated virus 41 dysentery 41 Bolshevik revolution 41 Crimean War 41 parvovirus 41 Pneumonic plague 41 tuberculosis 41 Cholera outbreak 41 typhoid outbreak 41 diarrheal disease 41 Marburg virus 41 falciparum malaria 41 Smallpox 41 Spanish conquistador 41 dengue epidemic 40 glaciations 40 canine distemper 40 Nome Alaska 40 chickenpox virus 40 Chicken pox 40 Monte Cassino 40 trichinosis 40 leprosy 40 monkeypox outbreak 40 Haiti cholera epidemic 40 Warsaw Uprising 40 Tularemia 40 Khe Sahn 40 Ebola outbreak 40 sweltering tractor trailer 39 AH#N# 39 potato famine 39 hemorrhagic fever 39 Spanish flu pandemic 39 deadly Ebola virus 39 Tropical Storm Agatha 39 Franco Prussian War 39 meningococcal septicemia 39 bilharzia 39 Landslide kills 39 Chickenpox 39 Earthquake rattles 39 Acinetobacter 39 chytrid fungus 39 Soviets invaded 39 New Zealander Edmund 39 leishmaniasis 39 Hitler armies 39 Sumatra Aceh 39 malnourishment 39 Nome 39 hookworm 39 intestinal parasites