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Which of the following applies to scarlet fever? (select all correct answers)

Cases of toxic shock syndrome and food poisoning may be related to

The agent responsible for re-emerging disease tuberculosis is in the following genus:

If the ID 50 of norwalk virus is 10 virions and the ID 50 of rotavirus is 100 virions, which virus is easier to get sick with? 

On June 27th last year, a crew of five workers began partial demolition of an abandoned city hall building in Belfry, Kentucky.  One truck driver who hauled the debris to the dump, four workers who helped the driver haul and dump the debris, and two people who had washed the building assisted them.  At the time of demolition, a colony of bats had been observed in the vicinity of the building, and an approximately 2-foot deep pile of debris covered with bat guano had accumulated in the building.  During demolition, none of the workers wore personal protective equipment (i.e. respirators, eye protection, gloves, or protective clothing).  Within 3 weeks, six of these workers required treatment for acute respiratory illnesses, and three had been hospitalized.  Their symptoms included chills, fever, cough, and headache.  Several had substernal discomfort.  Crackles were heard in the lungs upon auscultation.  Because all the med had worked together, a common source of infection was suspected, probably an environmental source.  All of the men recovered without complications after receiving the anti-fungal medication amphotericin B.  Which is the most likely causative agent?

The agent responsible for re-emerging disease tuberculosis is in the following genus:

A nursing assistant presented with a 3-day history of fever and malaise.  Physical examination revealed jaundice, light-colored feces, and dark urine.  Liver enzymes that indicate liver function were elevated.  Blood cultures were negative for bacteria.  The likely route of transmission of his infectious disease:

A patient complains of vaginal irritation and a sulfur smell with a greenish watery discharge.  A wet-mount examination reveals an orgaism with a large central nucleus.  The patient can be diagnosed with

In the United States the largest reservoir for rabies is: 

Which of the following is true of nosocomial infections?