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Case Study 10- The patient was an 8-year-old male with a 2-day history of diarrhea. He presented with worsening diarrhea (14 movements that day) which had become bloody. He also complained of pain on defecation. He had vomited once. He had attended a cookout 6 days prior. He claimed that his mother made him eat a hamburger that was "pink inside" even though he "did not like it." His physical examination was benign except for obvious dehydration. His laboratory findings were significant for WBC count of 13,000 wbc/ul with 9,700 neutrophils/ul, a methylene blue stain of feces that showed abundant polymorphonuclear cells, and a positive stool guaiac. He was treated with trimethoprim-sulfamethoxazole and intravenous fluid therapy for dehydration. He quickly improved and was discharged within 24-hours. Culture of his stool specimen on MacConkey-sorbitol agar was positive for Gram negative lactose positive organisms. What is the infecting microorganism? Epidemiology: How does this organism enter the body and how does it spread within the body and go from person to person? How was this disease contracted? Pathogenesis: What are the virulence factors? How does this organism cause pathology? Clinical Manifestations: What are the signs and symptoms of the disease? How does the disease present itself to the health-care professional? Laboratory Finding: How would you diagnose this organism? What should you find? Treatment and Prevention: How would you treat this disease, and how would you prevent contraction of this organism?

Case Study 10-

The patient was an 8-year-old male with a 2-day history of diarrhea. He presented with worsening diarrhea (14 movements that day) which had become bloody. He also complained of pain on defecation. He had vomited once. He had attended a cookout 6 days prior. He claimed that his mother made him eat a hamburger that was "pink inside" even though he "did not like it." His physical examination was benign except for obvious dehydration. His laboratory findings were significant for WBC count of 13,000 wbc/ul with 9,700 neutrophils/ul, a methylene blue stain of feces that showed abundant polymorphonuclear cells, and a positive stool guaiac. He was treated with trimethoprim-sulfamethoxazole and intravenous fluid therapy for dehydration. He quickly improved and was discharged within 24-hours. Culture of his stool specimen on MacConkey-sorbitol agar was positive for Gram negative lactose positive organisms.

What is the infecting microorganism?
Epidemiology: How does this organism enter the body and how does it spread within the body and go from person to person? How was this disease contracted?
Pathogenesis: What are the virulence factors? How does this organism cause pathology?
Clinical Manifestations: What are the signs and symptoms of the disease? How does the disease present itself to the health-care professional?
Laboratory Finding: How would you diagnose this organism? What should you find?
Treatment and Prevention: How would you treat this disease, and how would you prevent contraction of this organism?

Case Study 10-

The patient was an 8-year-old male with a 2-day history of diarrhea. He presented with worsening diarrhea (14 movements that day) which had become bloody. He also complained of pain on defecation. He had vomited once. He had attended a cookout 6 days prior. He claimed that his mother made him eat a hamburger that was "pink inside" even though he "did not like it." His physical examination was benign except for obvious dehydration. His laboratory findings were significant for WBC count of 13,000 wbc/ul with 9,700 neutrophils/ul, a methylene blue stain of feces that showed abundant polymorphonuclear cells, and a positive stool guaiac. He was treated with trimethoprim-sulfamethoxazole and intravenous fluid therapy for dehydration. He quickly improved and was discharged within 24-hours. Culture of his stool specimen on MacConkey-sorbitol agar was positive for Gram negative lactose positive organisms.

What is the infecting microorganism?
Epidemiology: How does this organism enter the body and how does it spread within the body and go from person to person? How was this disease contracted?
Pathogenesis: What are the virulence factors? How does this organism cause pathology?
Clinical Manifestations: What are the signs and symptoms of the disease? How does the disease present itself to the health-care professional?
Laboratory Finding: How would you diagnose this organism? What should you find?
Treatment and Prevention: How would you treat this disease, and how would you prevent contraction of this organism?

Added by Kelly H.

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