katch wreck"Lastly, we find that Enterobacteriaceae use human serum as a source of nutrients for growth and that chemotaxis and the chemoreceptor Tsr provides a competitive advantage for migration into enterohaemorrhagic lesions. We term this bacterial behavior of taxis toward serum, colonization of hemorrhagic lesions, and the consumption of #serum nutrients, as “bacterial vampirism” which may relate to the proclivity of #Enterobacteriaceae for bloodstream #infections."