William E. Trick*
, Brandon M. Zagorski†, Jerome I. Tokars*, Michael O. Vernon†, Sharon F. Welbel†‡§, Mary F. Wisniewski†‡, Chesley Richards*, and Robert A. Weinstein†‡§
Figure 1. Flowchart displaying the determinations necessary for categorizing positive blood culture by computer algorithm. The rules described in Table 1 are in bold. Blood cultures were obtained from patients at Cook County and Provident Hospitals, September 1, 2001–February 28, 2002, Chicago, Illinois. BSI, blood stream infection; CVC, central-venous catheter. aSame species isolated from blood within 30 days. bRule B1 or B2 (Table 1). cRule C1 or C2 (Table 1). dRule A (Table 1). eRule D (Table 1).