Table 4. Antibiotics choice in acute gastro-enteritis (AGE).

Condition	First finding	Alternative drugs
Small intestine	Cotrimoxazole
Bacterial overgrowth	Metronidazole
Invasive/toxic state	Ceftriaxone	Ampicillin
Antibiotics	Metronidazole
Campylobacter jejuni	Azithromycin	Ciprofloxacin, vancomycin
Clostridium difficile	Metronidazole	Vancomycin
Nontyphoidal	Amoxicillin or ceftriaxone	Trimethoprim-sulfamethoxazole
Salmonella typhi	Third-generation cephalosporins	Chloramphenicol
Shigella	Azithromycin, ceftriaxone	Cefixime, ciprofloxacin
Yersinia	Trimethoprim sulfamethoxazole	Ceftriaxone
Vibrio cholerae	Azithromycin	Doxycycline (<8 y), ciprofloxacin
ETEC	Azithromycin (only for traveler’s diarrhea)	Trimethoprim sulfamethoxazole
Traveler’s diarrhea	Cotrimoxazole

ETEC = enterotoxigenic Escherichia coli.