FIG. 1.

Characteristics of the GBS isolates responsible for the two cases of meningitis reported here and of other serotype Ib isolates recovered in Portugal. The dendrogram was derived by the unweighted-pair group method using average linkages by using the Dice coefficient of the SmaI PFGE profiles of the isolates generated by using the Bionumerics software (Applied Maths, Sint-Martens-Latem, Belgium). The horizontal scale at the top represents the percentage of relatedness between isolates. STs were determined by multilocus sequence typing. ND, not determined. Patient ages are indicated in years (yr) or days (d). The two isolates responsible for the cases reported are in bold.