The patient was a 37-year-old male with hemophilia. He was HIV positive and had progressed from AIDS-related complex to AIDS in the past 3 months. He had a number of previous admissions, the most recent for pneumocystis carinii pneumonia. His current therapeutic regimen included factor VIII treatments, suppressive trimethoprim-sulfamethoxazole, and azidothymidine
The patient was a 37-year-old male with hemophilia. He was HIV positive and had progressed from AIDS-related complex to AIDS in the past 3 months. He had a number of previous admissions, the most recent for pneumocystis carinii pneumonia. His current therapeutic regimen included factor VIII treatments, suppressive trimethoprim-sulfamethoxazole, and azidothymidine (AZT). He presented with a 3-day history of voluminous diarrhea, 10-Ib weight loss, and profound dehydration. Methylene blue stain of stool was negative for white blood cells. An examination for occult blood was also negative. He gave no recent travel history, nor had he recently consumed shellfish.
1. What type of enteric pathogens are usually ruled out by a negative examination of fecal leukocytes and occult blood?
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