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Marco is infected with an isolate of Escherichia coli that was serotyped as O13:H9:K1. Given his serotype, what disease is he at greatest risk for developing?

Which of the following would involve the formation of visible quantities of pus?

Congenital infection of the fetus carried by a pregnant woman is possible when the woman is infected with:

Epidemiologists called in by the NYS Department of Health culture samples of the food eaten by a number of patients believed to be suffering from Clostridium perfringens food poisoning. Unsurprisingly, they confirm the clinical diagnosis because they find large numbers of:

The signs and symptoms of hepatitis caused by Hepatitis A virus infection are the result of

BONUS:  You have a patient that is suffering from a severe pyoderma. Lancing and subsequent microscopic investigation of the pustular exudate has revealed the presence of Gram-positive cocci that produce streptokinase. What can you conclude from this information alone?

Which of the following vaccines protects against norovirus infection?

The MMR vaccine triggers production of neutralizing antibody against the Mumps virus ____ protein.

Jonathan has been suffering from heartburn for a number of years and has recently begun taking omeprazole. Recently, he has begun to suffer from a pronounced, watery diarrhea. What seems like the most likely explanation for his sudden illness?

For a patient suffering from measles, what condition(s) is/are she or her fetus at risk for developing?