Table 1

Risk of illness among household contacts by history of direct physical contact with a primary case

Study and contact statusDevelopment of EVD
No. who became ill (% of total ill)No. who were not ill (% of total not ill)Total
Dowell et al. (19)
    Direct contact28 (100)67 (46)95
    No direct contact0 (0)78 (54)78
    Total28145173
Baron et al. (17)
    Direct contact27 (93)59 (57)86
    No direct contact2a (7)44 (43)46
    Total29103132
Francesconi et al. (18)
    Direct contact26 (96)47 (80)73
    No direct contact1b (4)12 (20)13
    Total275986
Summation
    Direct contact81 (96)173 (56)254
    No direct contact3 (4)134 (44)137
    Total84307391
  • a Contact status unknown.

  • b The patient had probable fomite exposure, i.e., used a blanket that the primary case had used before death.