FIG. 1.

Clustering of 452 ETEC strains isolated from 200 young children in Guinea-Bissau. From the UPGMA dendrogram, which was generated on the basis of both ERIC and REP PCR fingerprinting, 30 clusters were identified. Representative REP and ERIC rep-PCR fingerprint patterns for one strain from each cluster are shown, together with an indication of the toxin-CF profile shared by most strains in the cluster. Parentheses around a toxin or a CF indicate that several of the members were not positive for that toxin or CF.