Where does Salmonella Typhi, the organism behind typhoid fever, live between outbreaks?
a.In humans, who can carry and shed it while feeling well
b.In poultry flocks, where it lives in the birds' intestines
c.In coastal waters, where filter feeders concentrate it
d.In soil and dust, where it forms heat-resistant spores
Giải thích
Salmonella Typhi is carried by people, and a carrier can shed the organism in feces long after symptoms end, which is why the Food Code makes typhoid fever reportable for three months after diagnosis. Nontyphoidal Salmonella is the one associated with poultry and eggs, Vibrio with coastal waters, and Clostridium species with soil.
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