TABLE.

Work responsibilities and clinical information for five health care workers (HCWs) who became infected with Ebola virus while working in an Ebola treatment unit (ETU) or an adjacent general hospital (hospital A) — Monrovia, Liberia, July 2014

Work responsibilities/Clinical information	HCW A	HCW B	HCW C	HCW D	HCW E
Work location	Hospital A ED	ETU and hospital A ED triage area	ETU and hospital A ED triage area	ETU (hospital A ED triage area: unknown)	Hospital A ED
Work shift; shift Frequency	Night only; 3.5 shifts per week	Day and night; ~14 day and 7 night shifts per month	Day only; shift frequency not available	Night only; shift frequency not available	Night only; 3.5 shifts per week
Responsibilities	Direct patient care in hospital A ED	Direct patient care in ETU; assessment of patients in hospital A ED and triage area; cleaning and disinfection of grossly contaminated surfaces in hospital A triage area; cleaning and disinfection of grossly contaminated surfaces in hospital A ED	Disinfecting soiled surfaces and HCWs leaving ETU ward, but inside the ETU containment area; cleaning and disinfection of grossly contaminated surfaces in hospital A triage area	Disinfecting soiled surfaces and HCWs leaving ETU ward, but inside the ETU containment area; unknown whether cleaning and disinfection activities were performed in hospital A triage area	Direct patient care in hospital A ED
Barrier precaution equipment use in ETU	Did not work in this setting	As recommended by MSF for this setting*	As recommended by MSF for this setting*	As recommended by MSF for this setting*	Did not work in this setting
Barrier precaution equipment use in hospital A ED	Gloves were used when available; use of other equipment unknown†	Double gloves and gown reported at a minimum for all patient and cleaning encounters; use of additional mucus membrane barrier precaution equipment variable†	Unknown	Unknown	Gloves were used when available; use of other equipment unknown†
Ill contacts outside of work	Unknown	None reported	None reported	Unknown	Unknown
Date of symptom onset	July 14	July 22	July 22	July 23	July 29
Outcome	Died July 26	Recovered	Recovered	Died July 27	Recovered
Case status	Laboratory confirmed§	Laboratory confirmed§	Laboratory confirmed§	Probable	Laboratory confirmed§
Additional comments	No other HCWs in cluster were reported to have contact with this HCW after July 14	Participated in cleaning and disinfecting surfaces grossly contaminated on July 14	No additional information	Died with hemorrhagic manifestations of EVD	Had direct, unprotected patient contact with undetected, but infected patient in hospital A ED on July 14
	Did not work on July 14				Never worked same night shift as HCW A
Information source	Indirect: interview of coworkers, administrators; review of work schedule	Direct: interview Indirect: interview of coworkers, administrators; review of work schedule	Direct; interview Indirect: interview of coworkers, administrators; review of work schedule	Indirect: interview of coworkers and administrators; review of work schedule	Indirect: interview of coworkers and administrators; review of work schedule

Abbreviations: ED = emergency department; MSF = Médecins Sans Frontières (Doctors Without Borders).

^*A description of personal protective equipment use recommended for ETUs can be found in Sterk E. Filovirus haemorrhagic fever guidelines, Médecins Sans Frontières, 2008:34. Available at http://www.slamviweb.org/es/ebola/fhffinal.pdf.

^†This is not adequate barrier precaution use for caring for patients with Ebola or for cleaning and disinfecting surfaces grossly contaminated with Ebola-containing fluids.

^§Laboratory-confirmed by reverse transcription–polymerase chain reaction.