SimilarityRank
an_outbreak 0.806 99315
outbreak_of 0.770 54409
epidemic 0.770 9792
disease_outbreak 0.743 90918
an_outbreak_of 0.733 92417
pandemic 0.727 26455
influenza 0.684 26018
bird_flu 0.672 79601
human_case 0.672 92399
infection 0.669 2757
avian_influenza 0.668 99042
cholera 0.659 27526
the_Ebola_virus 0.656 74773
Ebola 0.651 11439
measles 0.649 26034
swine_flu 0.645 73020
an_epidemic 0.635 82990
salmonella 0.633 79933
H1N1 0.633 92062
Salmonella 0.629 55733
the_outbreak_of 0.622 34755
hepatitis_A 0.621 96413
flu 0.618 15100
dengue_fever 0.609 87089
dengue 0.607 47346