The rise in foodborne-related outbreaks of non O157 shiga-toxin producing E. coli (STECs) emphasizes the importance of developing improved methods to rapidly detect and characterize STECs. The major s
The initial virulence and invasiveness of a bacterial strain may play an important role in leading to a maximally efficacious attenuated live vaccine. Here we show that χ9909, derived from Salmonella