Table 1. Principal features of STH and S. stercoralis.

Feature	Major STH				S. stercoralis
	A. lumbricoides	T. trichiura	A. duodenale	N. americanus
Multiplication within the host/autoinfection	−	−	−	−	+++
Morbidity acute/chronic	+/+ ++	+/+++	++/++++	+/+++	++/++++
Potential fatality	+	−	++	+	++++
Main diagnostic stage	Egg	Egg	Egg	Egg	Larvae
Therapeutic goal	Cure or decreasing worm load	Cure or decreasing worm load	Cure or decreasing worm load	Cure or decreasing worm load	Cure
Outcome measurement	Cure rate and egg reduction rate	Cure rate and egg reduction rate	Cure rate and egg reduction rate	Cure rate and egg reduction rate	Cure rate