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Volume 22, Number 8—August 2016
Research

Exposure-Specific and Age-Specific Attack Rates for Ebola Virus Disease in Ebola-Affected Households, Sierra Leone

Hilary Bower, Sembia Johnson, Mohamed S. Bangura, Alie Joshua Kamara, Osman Kamara, Saidu H. Mansaray, Daniel Sesay, Cecilia Turay, Francesco Checchi, and Judith R. GlynnComments to Author 
Author affiliations: London School of Hygiene & Tropical Medicine, London, UK (H. Bower, J.R. Glynn); Save the Children, Freetown, Sierra Leone (S. Johnson, M.S. Bangura, A.J. Kamara, O. Kamara, S.H. Mansaray, D. Sesay, C. Turay); Save the Children, London (F. Checchi)

Main Article

Table 2

Distribution of outcomes by age and sex among Kerry Town Ebola Treatment Centre survivors and their household members, Sierra Leone, 2014–2015*

Characteristic Total No. (%)
Overall % EVD#
Persons with no symptoms Persons with some symptoms† SympCD and neg test‡ SympCD and no test§ EVD survivors Probable EVD deaths¶ EVD deaths
Total
933
431 (46.2)
35 (3.8)
19 (2.0)
42 (4.5)
168 (18.0)
11 (1.2)
227 (24.3)
48
Sex
M 399 184 (46.1) 19 (4.8) 11 (2.8) 20 (5.0) 62 (15.5) 5 (1.3) 98 (24.6) 46
F
534
247 (46.3)
16 (3.0)
8 (1.5)
22 (4.1)
106 (19.9)
6 (1.1)
129 (24.2)
49
Age, y**
<2 54 27 (50.0) 2 (3.7) 0 1 (1.9) 4 (7.4) 1 (1.9) 19 (35.2) 46
2–4 86 49 (57.0) 2 (2.3) 2 (2.3) 8 (9.3) 9 (10.5) 1 (1.2) 15 (17.4) 38
5–9 131 82 (62.6) 4 (3.1) 4 (3.1) 11 (8.4) 15 (11.5) 0 (0.0) 15 (11.5) 31
10–14 121 78 (64.5) 3 (2.5) 3 (2.5) 8 (6.6) 18 (14.9) 0 11 (9.1) 31
15–19 107 57 (53.3) 4 (3.7) 2 (1.9) 1 (0.9) 28 (26.2) 0 15 (14.0) 41
20–29 178 76 (42.7) 8 (4.5) 4 (2.2) 10 (5.6) 49 (27.5) 1 (0.6) 30 (16.9) 51
30–39 114 31 (27.2) 3 (2.6) 3 (2.6) 3 (2.6) 26 (22.8) 3 (2.6) 45 (39.5) 68
40–49 62 12 (19.4) 4 (6.5) 1 (1.6) 0 12 (19.4) 4 (6.5) 29 (46.8) 73
>50 76 18 (23.7) 5 (6.6) 0 0 7 (9.2) 0 46 (60.5) 70

*Excluded are 4 persons who died with uncertain cause (3 females, 1 male). EVD, Ebola virus disease.
†Persons had some EVD symptoms but did not fulfill case definition.
‡Persons met EVD case definition on interview but reported a negative PCR test for Ebola.
§Persons met EVD case definition on interview but were never tested.
¶Description of symptoms leading to death were compatible with Ebola, but EVD was not diagnosed at the time.
#Overall % EVD includes EVD cases and deaths, SympCD and no test, and Probable EVD deaths as case-patients.
**Age missing for 4 persons (2 reported EVD deaths, 1 probable EVD death, 1 with no symptoms).

Main Article

Page created: July 15, 2016
Page updated: July 15, 2016
Page reviewed: July 15, 2016
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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