Volume 16, Number 3—March 2010
Research
Effects of Mumps Outbreak in Hospital, Chicago, Illinois, USA, 2006
Figure 1

Figure 1. Epidemiology of 9 mumps cases at Northwestern Memorial Hospital, Chicago, Illinois, USA, April 23–May 23, 2006. Black bars, community-acquired cases among staff members; white bars, community-acquired cases among patients; red bars, secondary cases among staff members; blue bars, presumed work-related cases among staff members; CT1, first chain of transmission; CT2, second chain of transmission.