For 10 points, name this Gram-negative bacterial genus which includes species enterica, whose serovar typhi is a common cause of food poisoning in poultry.
One subtype of the most common species in this microbial genus produces a protein to stabilize tight junctions between intestinal cells. That protein, AvrA, is secreted through the Type III secretory system of that species in this genus, and dampens inflammation to allow that pathogen of this genus to avoid breaking through the epithelium until its numbers can challenge the host immune system. That secretory system, encoded by this genus's namesake "pathogenicity island-1," enables species in this genus to inject virulence effectors into eukaryotic host cells. Some bacteria in this genus cause typhoid fever. For 10 points, name this Gram-negative bacterial genus which includes species enterica, whose serovar typhi is a common cause of food poisoning in poultry.
One subtype of the most common species in this microbial genus produces a protein to stabilize tight junctions between intestinal cells.
Salmonella