Genomic islands 16, 18, 21, 22 are important for interactions with intestinal & kidney epithelial cells.
Notably, plasmid-cured Escherichiacoli K1 showed reduced association, invasion, and intracellular survival of Caco-2 and MA104.
Genomic islands 4, 14, 15, 16, 21 showed reduced viability in response to normal human serum.
These findings will help focus our efforts in the discovery of novel virulence factors of therapeutic value.