SimilarityRank
outbreak_of 0.830 54409
outbreak 0.733 10943
an_outbreak 0.719 99315
bird_flu 0.637 79601
the_outbreak_of 0.633 34755
an_epidemic 0.626 82990
disease_outbreak 0.625 90918
epidemic 0.613 9792
swine_flu 0.612 73020
human_case 0.600 92399
avian_influenza 0.591 99042
hepatitis_A 0.580 96413
salmonella 0.578 79933
infect_with 0.576 87389
plague 0.574 9635
influenza 0.573 26018
pandemic 0.572 26455
be_infect_with 0.567 59036
measles 0.565 26034
cholera 0.557 27526
infection 0.554 2757
typhoid 0.553 80304
H1N1 0.551 92062
an_infection 0.547 37030
dengue_fever 0.546 87089