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Volume 22, Number 8—August 2016

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 1

Classification of level of exposure to EVD patients in study of EVD risk for household members, Sierra Leone, 2014–2015*

Level Definition
Contact with the body of EVD patient after death/prepared the body for burial
Direct contact with body fluids (e.g., blood, diarrhea, vomit, urine, or a baby breastfed by an EVD-positive woman)
Direct close contact with wet case; i.e., with diarrhea/vomiting/bleeding (e.g., person helped dress, embraced, carried, helped care for, or shared bed of an EVD patient with wet symptoms; or mother breastfed an EVD-positive child)
Direct close contact with dry case (i.e., without wet symptoms at the time) (e.g., person helped dress, embraced, carried, helped care for, or shared bed with an EVD patient without wet symptoms)
Indirect close contact with wet case (e.g., washed clothes or bed linen of an EVD patient with wet symptoms, or slept in the same room but not the same bed)
Indirect close contact with dry case (e.g., person washed clothes or bed linen of EVD patient without wet symptoms); formal/informal health workers without known contact with an EVD patient; ETC workers in PPE; Ebola Intervention workers (outside household only); person attended funeral without contact with the body (outside household only)
Minimal contact (e.g., person shared meals or utensils or sat In the same room; children placed in observation centers [outside household only])
8 No actual contact (e.g., person kept distance once EVD patient was symptomatic)

*ETC, Ebola Treatment Centre; EVD, Ebola virus disease; PPE, personal protective equipment.

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Page created: July 15, 2016
Page updated: July 15, 2016
Page reviewed: July 15, 2016
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