Pathogen	Recommended regimen for adults		Recommended regimen for children
Bacteria
Campylobacter	Erythromycin, 500 mg 2 times per day for 5 days		Azithromycin, 10 mg per kg per day for 3 to 7 days
	or
	Azithromycin (Zithromax), 500 mg on day 1, then 250 mg on days 2 through 5
Escherichia coli (non-Shiga toxin–producing)	Ciprofloxacin, 500 mg 2 times per day for 3 days		TMP-SMX, 5/25 mg per kg 2 times per day for 3 days*
	or			or
	TMP/SMX, 160/800 mg 2 times per day for 3 to 7 days*		Azithromycin, 10 mg per kg per day for 3 to 7 days
	or
	Azithromycin, 500 mg on day 1, then 250 mg on days 2 through 5
E. coli (Shiga toxin–producing)	Not recommended		Not recommended
Salmonella (nontyphoidal)	Generally not recommended†		Generally not recommended†
	If indicated:		If indicated:
	Ciprofloxacin, 500 mg 2 times per day for 5 to 7 days		TMP-SMX, 5/25 mg per kg 2 times per day for 5 to 7 days*
	or		or
	Azithromycin, 500 mg on day 1, then 250 mg on days 2 through 5‡		Azithromycin, 10 mg per kg per day for 3 to 7 days
	or		or
	Ceftriaxone, 1 to 2 g per day intramuscularly or intravenously for 5 to 7 days		Ceftriaxone, 50 to 100 mg per kg per day intramuscularly or intravenously for 5 to 7 days
Shigella	Ciprofloxacin, 500 mg 2 times per day for 3 days		TMP-SMX, 5/25 mg per kg 2 times per day for 3 days†
	or		or
	Azithromycin, 500 mg on day 1, then 250 mg on days 2 through 5		Azithromycin, 10 mg per kg per day for 3 to 7 days
Parasites
Cryptosporidium	Generally not recommended§		Generally not recommended§
Entamoeba histolytica	Metronidazole (Flagyl), 750 mg 3 times per day for 5 to 10 days		Metronidazole, 30 to 50 mg per kg per day in 3 divided doses for 7 to 10 days
		plus	plus
	Paromomycin, 500 mg 3 times per day for 7 days, or iodoquinol (Yodoxin), 650 mg 3 times per day for 7 days		Paromomycin, 25 to 35 mg per kg per day in 3 divided doses for 5 to 10 days
Giardia	Metronidazole, 250 to 750 mg 3 times per day for 7 to 10 days		Metronidazole, 30 to 50 mg per kg per day in 3 divided doses for 7 to 10 days