Volume 22, Number 8—August 2016
Research
Assessment of Community Event–Based Surveillance for Ebola Virus Disease, Sierra Leone, 2015
Ruwan Ratnayake1
, Samuel J. Crowe1, Joseph Jasperse, Grayson Privette, Erin Stone, Laura Miller, Darren Hertz, Clementine Fu, Matthew J. Maenner, Amara Jambai, and Oliver Morgan
, Samuel J. Crowe1, Joseph Jasperse, Grayson Privette, Erin Stone, Laura Miller, Darren Hertz, Clementine Fu, Matthew J. Maenner, Amara Jambai, and Oliver Morgan
Table 1
CEBS for Ebola virus disease, Sierra Leone, 2015*
| Surveillance variable | No. (%) |
|---|---|
| Alerts, n = 12,126 | |
| Death | 10,421 (86) |
| Sickness | 1,646 (14) |
| Unsafe burial | 7 (<1) |
| Other† |
52 (<1) |
| Trigger events | |
| >2 persons sick or dead in household | 205 (2) |
| Sickness or death after unsafe burial | 59 (<1) |
| Sickness or death in HCW | 70 (<1) |
| Sickness or death in traveler | 191 (2) |
| Sickness or death in contact of case-patient | 36 (<1) |
| Unsafe burial or washing of corpse | 7 (<1) |
| Other‡ |
11,558 (95) |
| Cases | |
| Suspected, probable, or confirmed | 287 (2) |
| Tested and ruled negative | 271 |
| Confirmed | 16 |
| Did not meet case definition | 10,173 (84) |
| Not escalated as an alert | 774 (6) |
| Lost to follow-up§ | 892 (7) |
*This analysis was conducted during February 27–September 30, 2015. CEBS, community event–based surveillance; HCW, healthcare worker.
†Alerts for unusual events that did not fall under any of the first 6 events listed in the trigger events section of the table.
‡A total of 10,042 (86.9%) of these events were deaths in the community.
§No follow-up or missing information on follow-up.
1These first authors contributed equally to this article.
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