Volume 7, Number 5—October 2001
Research
Factors Contributing to the Emergence of Escherichia coli O157 in Africa
Figure 1

Figure 1. . Map of the area affected by an outbreak of diarrheal illness in 1992.a aPulsed-field gel electrophoresis of 31 of the Escherichia coli O157:NM isolates from six locations identified three distinct patterns, designated A, B and C; the locations where these isolates were obtained are indicated on the map by the corresponding letter. Not shown on the map is Empangeni, South Africa, located approximately 200 km south of Swaziland border, where E. coli O157 was also recovered. The Usutu River is also called the Lusutfu River.