subjected 200 isolates of S. epidermidis to
PFGE genotyping together with 105 isolates previously obtained
from breast milk of 12 healthy women. The analysis of the fingerprints
obtained revealed the existence of 40 different pulsotypes
among the isolates from women with mastitis and 36 among
healthy women. Comparison of these genotypes showed that most
of the strains grouped together depended on their origin in two
different clusters, one containing most of the strains obtained from
mastitic milk while the second contained most of the strains isolated
from milk of healthy women.