Microbiology Exam 4- Ch. 21,22,23

Using a homemade saline solution for contact lenses can result in

Acanthamoeba keratitis

Which of the following is likely to spread MRSA among athletes?

All of the answers are correct: shared equipment, taping gel, physical contact, whirlpool baths

An eight-year-old girl in rural Wisconsin has chills, headache, and fever and reports having been bitten by mosquitoes. How would you confirm your diagnosis of arboviral encephalitis?

ELISA test for IgM antibodies

A 17-year-old boy has pus-filled cysts on his face and upper back. Microscopic examination reveals gram-positive rods. This infection is caused by

Propionibacterium acnes

Which of the following is incorrectly matched?

Pseudomonas-inclusion conjunctivitis

Unsanitary and crowded conditions increase the incidence of all of the following diseases EXCEPT

Rocky Mountain Spotted Fever

A 45-year-old man has pus-filled vesicles distributed over his back in the upper right quadrant, over his right shoulder, and upper right quadrant of his chest. His symptoms are most likely due to

Varicella-zoster virus

Which of the following is NOT controlled by a mosquito eradication program?

schistosomiasis

Which of the following leads to all the others?

staphylococcal infection

Which of the following is treated with antibiotics?

streptococcal pneumoniae

A patient presents with inflammation of the heart valves, fever, malaise, and subcutaneous nodules at joints. The recommended treatment is

supportive care

Naegleria fowleri meningoencephalitis is commonly acquired by

swimming in warm ponds or streams

Vaccination is available for all the following EXCEPT

Botulism

Thrush and vaginitis are caused by

Candida albicans

Which of the following pairs is mismatched?

Chickenpox-pox virus

Which virus is the cause of Burkitt's lymphoma?

Epstein-Barr virus

Which of the following statements about toxoplasmosis is FALSE?

It can be a severe illness in adults

Which of the following statements about Neisseria meningitis is FALSE?

It is a gram-positive anaerobe

Which of the following statements about Reye syndrome is FALSE?

It mostly affects older adults.

Which organism can often be transmitted by the bite of a domestic animal and causes sepsis?

Pasteurella multicoda

Arthropods can serve as a reservoir for all of the following diseases EXCEPT

brucellosis

Which of the following is NOT caused by HSV-1?

canker sores

Which of the following is NOT caused by a bacterium?

malaria

Which of the following is NOT a zoonosis?

puerperal sepsis

Which of the following pairs is mismatched?

puerperal sepsis-S. aureus

An eight-year-old girl has scabs and pus-filled vesicles on her face and throat. Three weeks earlier she had visited her grandmother, who had shingles. What infection does the eight-year-old have?

Chickenpox

A 30-year-old woman was hospitalized after she experienced convulsions. On examination, she was alert and oriented and complained of a fever, headache, and stiff neck. Any of the following organisms could be responsible for her symptoms EXCEPT

Clostridium botulinum

All of the following organisms cause meningitis EXCEPT

Clostridium botulinum

Which of the following pairs is mismatched?

Clostridium tetani-gram negative rod

A 30-year-old woman was hospitalized after she experienced convulsions. On examination, she was alert and oriented and complained of a fever, headache, and stiff neck. Which of the following is most likely to provide rapid identification of the cause of her symptoms?

Gram-stain of CSF

A one-year-old boy was listless, irritable, and sleepy. Capsulated Gram-negative rods were cultured from his cerebrospinal fluid. His symptoms were caused by

H. influenzae

Which of the following statements about tularemia is FALSE?

It occurs only in California

Microscopic examination of cerebrospinal fluid reveals gram-positive rods. What is the organism?

Listeria

A bull's-eye rash is a common symptom of which disease?

Lyme disease

The patient has scaling skin on his fingers. Conidiospores are seen in microscopic examination of skin scrapings. The etiology is

Microsporum

Which of the following statements about rabies is FALSE?

Most infections in the US are a result of bites from infected dogs

The patient has vesicles and scabs over her forehead. Microscopic examination of skin scrapings shows gram-positive cocci in clusters. The etiology is

Staphylococcus aureus

All of the following are normal microbiota of the skin EXCEPT

Streptococcus

Which organism causes erysipelas, necrotizing fasciitis, and is commonly called the "flesh-eating bacteria"?

Streptococcus pyogenes

In which of the following respects is measles similar to German measles (rubella)?

They can be controlled by vaccination

All of the following are transmitted via the respiratory route EXCEPT

Tinea

Which of the following pairs is mismatched?

cat-scratch disease-malignant pustule developing into septicemia

All of the following are acquired by ingestion EXCEPT

cryptococcosis

Chickenpox is caused by a _______.

herpesvirus

A patient complains of fever, severe muscle and joint pain, and a rash. The patient reports returning from a Caribbean vacation one week ago. Which of the following do you suspect?

dengue

Which one of the following causes the most severe illness in humans, with a mortality rate of 30 percent?

eastern equine encephalitis

Which of the following is NOT treated with antibiotics?

ebola

A possible complication of chickenpox is

encephalitis.

Arboviruses cause ________ and are transmitted by ________.

encephalitis;mosquitoes

Epstein-Barr virus has been implicated in all of the following EXCEPT

endocarditis

A patient returning from an extended trip into Mexico has the following symptoms: a papule at the site of a previous bug bite and enlarged lymph nodes. Microscopic examination of the papule reveals nucleated cells in white blood cells. The patient most likely has

leishmaniasis

Drugs can cross the blood-brain barrier ONLY if they are

lipid-soluble

Bacterial encephalitis and meningitis are difficult to treat because

many antibiotics cannot penetrate the bloodbrain barrier.

A 62-year-old man was hospitalized with an eight-day history of fever, chills, sweats, and vomiting. His temperature on admission was 40°C (104°F). A routine peripheral blood smear revealed ring-shaped bodies in the RBCs. What treatment would you prescribe?

mefloquine

The prodromal (i.e. pre-acute disease stage) symptoms of bacterial meningitis is/are

mild cold symptoms

Which of the following pairs is mismatched?

pasteurella-cat scratch disease

Which of the following pairs is mismatched?

poliomyelitis-respiratory route

All of the following organisms are correctly matched to the recommended treatment EXCEPT

poliovirus-amphotericin B

Which of the following are incorrectly matched?

poxvirus-fever blisters

Which of the following is NOT a characteristic of Bacillus anthracis?

produces endotoxins