Your diabetic patient has a foot wound that has developed into serious necrosis and the recommended treatment has been sessions in the hyperbaric oxygen chamber. You are explaining to him what has contributed to this condition, including the causative agent, which is:
a. Bacillus anthracis.
b. Clostridium perfringens.
c. Corynebacteria diphtheriae.
d. Streptococcus pyogenes.
e. Pseudomonas aeroginosa.

Your patient is reminiscing about her childhood diseases while reviewing her medical history. She claims she had a really bad case of rubella (German measles) when she was a child and that she was very sick. You think she is confusing it with rubeola (measles) because:

a. measles can cause congenital rubella syndrome.

b. German measles causes a mild rash and is not likely to make a patient very sick.

c. the largest concern is for secondary infections like pneumonia.

d. she didn’t mention Koplik’s spots in the mouth or raised lesions.

e. the raised red rash usually begins on the trunk and spreads from there.

A child comes into your clinic with impetigo. The lab cultures a sample for further analysis. If the sample is S. aureus, which lab results would you expect?

a. Gram-positive cocci in clusters, catalase and coagulase positive

b. Gram-negative diplococci, catalase positive, and coagulase negative

c. Gram-positive cocci in clusters, catalase negative, and coagulase positive

d. Gram-positive cocci in chains, catalase positive, and coagulase negative

e. Gram-positive cocci in chains, catalase negative, and coagulase positive

Select the false statement about trachoma:

a. The causative agent is bacterial.

b. It is the leading cause of infectious blindness in the United States.

c. It is transmitted by unhygienic items, such as flies, fingers, and fomites.

d. Uncomplicated cases can be resolved with antibiotics.

e. Severe cases require surgery.

Acanthamoeba protozoa species are associated with:

a. keratitis.

b. conjunctivitis.

c. river blindness.

d. trachoma.

e. all of the above.

A frantic mother comes into your clinic because her two-year-old child has had a very high fever for two days now, with mild diarrhea and coldlike symptoms. As you consider the differential list, which is the most likely causative agent if the fever breaks and is replaced with a rash by tomorrow?

a. Human parvovirus B19

b. Hand, foot, and mouth disease

c. Roseola

d. Rubella

e. Measles

Which best describes conjunctivitis (select ALL that apply)?

a. Itchy eyes

b. Scarred cornea

c. Red eyes

d. Inverted eyelashes

e. Scarred conjunctiva