Table 2. Reported cases and reported cases among health care workers during five infection generations of the 2014 outbreak of Ebola in West Africa.

Date	Cumulative Cases	Cumulative Cases among HCWs
4 July 2014	122	12
19 July 2014	197	20
3 August 2014	498	64
18 August 2014	972	115
2 September 2014	1,847	153

Data were obtained by aggregating into 15-day intervals the new cases that were irregularly reported by the WHO and Liberia Ministry of Health between endpoints of each interval. Dates in this table represent the last date of an interval.