Wallach's Interpretation of Diagnostic Tests: Pathways to Arriving at a Clinical Diagnosis (143 page)

The following lists provide common agents based on disease presentation. In addition to the clinical presentation, epidemiologic risk should be considered when determining diagnostic and therapeutic strategies. Additional information is provided for a number of agents in
Chapter
11
.
Infectious Diseases
.

   Gastroenteritis with vomiting as the prominent symptom. Suspect:

   Anisakiasis

   Enteric viruses (e.g., rotavirus, norovirus, enteric adenovirus)

   Preformed toxin ingestion (
S. aureus
,
B. cereus
)

   Noninflammatory diarrhea (watery without marked fecal WBCs or RBCs). Suspect:

   
Clostridium perfringens

   
Cryptosporidium
species

   
Cyclospora cayetanensis

   Enteric virus (astrovirus, norovirus or other calicivirus, adenovirus, rotavirus)

   Enterotoxigenic
E. coli

   
Giardia lamblia

   
Vibrio cholerae

   Inflammatory diarrhea as the prominent symptom (grossly bloody stool, pus or increased fecal WBCs, fever, and systemic signs and symptoms). Suspect