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TABLE 1.

Incidence of plague in control mice after fleabite challenge

Mouse No. of challenges Total no. of fleabites (cumulative) No. of blocked fleabites (cumulative) Time to onset of symptoms (h)
C1 1 12 0 101
C2 2 51 3 55
C3 2 56 3 50
C4 1 13 0 53
C5 1 18 3 56
C6 1 22 5 77
C7 1 24 2 74
C8 1 16 0 74
C9 3 79 6 49
C10 3 87 8 75
C11 2 47 3 Survived
C12 2 61 5 99
C13 2 55 5 66
C14 2 58 6 72
C15 3 96 7 56
Mean ± SD 1.8 ± 0.8 46.3 ± 27.8 3.7 ± 2.5 68 ± 17