SimilarityRank
epidemic 0.804 9792
outbreak 0.727 10943
H1N1 0.686 92062
influenza 0.685 26018
Ebola 0.670 11439
the_Ebola_virus 0.669 74773
disease_outbreak 0.669 90918
an_epidemic 0.667 82990
infectious_disease 0.662 13558
swine_flu 0.648 73020
communicable_disease 0.635 59999
an_outbreak 0.624 99315
SARS 0.620 52517
bird_flu 0.620 79601
outbreak_of 0.619 54409
avian_influenza 0.615 99042
natural_disaster 0.614 11355
cholera 0.605 27526
smallpox 0.601 53441
measles 0.600 26034
flu 0.596 15100
influenza_virus 0.592 75849
HIV_/_AIDS 0.586 9611
HIV 0.581 4113
plague 0.578 9635