Table 1. Demographic, epidemiologic, and clinical characteristics of travelers with schistosomiasis acquired in Laos*.

Patient no.	Age, y/sex	Clinical features	Countries visited during index trip	Places of water exposure in Laos	Date of exposure	Date of clinic visit	Possible past exposure to schistosomiasis	Serology, genus-specific/ immunoblot	Stool ova
1	27/F	AS	China, Laos, Cambodia, Thailand	4,000 Islands	2003 Apr	2003 Sep	1997, Malawi	Pos/S. japonicum	Neg
2	22/F	AS	Thailand, Laos, Cambodia, Vietnam	Vang Vieng, 4,000 Islands	2007 Jun	2007 Aug	No	Pos/S. japonicum	Neg
3	23/M	AS	Thailand, Nepal, Laos, Vietnam, Cambodia	Vang Vieng, 4,000 Islands	2006 Apr	2006 Jun	No	Pos/S. japonicum	ND
4	38/F	AS	India, Thailand, Laos, Cambodia	Vang Vieng, 4,000 Islands	2008 Apr	2008 May	No	Pos/S. japonicum	Neg
5	9/F	AS	India, Thailand, Laos, Cambodia	Vang Vieng, 4,000 Islands	2008 Apr	2008 May	No	Pos/S. japonicum	Pos
6	42/M	AS	India, Thailand, Laos, Cambodia	Vang Vieng, 4,000 Islands	2008 Apr	2008 May	No	Pos/S. japonicum	ND
7	6/M	AS	India, Thailand, Laos, Cambodia	Vang Vieng, 4,000 Islands	2008 Apr	2008 May	No	Pos/S. japonicum	ND
8	24/F	CS	Thailand, Laos, India	Vang Vieng, 4000 Islands	2003 Nov	2006 May	No	Pos/Neg	Neg
9	36/F	CS	India, Thailand, Vietnam, Cambodia, Laos	Vang Vieng	2004 Mar	2005 May	No	Pos/S. japonicum	ND
10	26/F	CS	Thailand, Laos, Australia, New Zealand	Vang Vieng	2003 Nov	2004 Nov	No	Pos/S. haematobium†	Neg
11	22/M	CS	Thailand, Laos, China, Nepal	Vang Vieng	2007 Feb	2007 Dec	No	Pos/ND	Neg
12	23/M	CDA	Thailand, Laos, Vietnam, Cambodia, China	Vang Vieng	2007 Mar	2007 Aug	No	Pos/S. japonicum	ND

*AS, acute schistosomiasis; CS, chronic schistosomiasis; pos, positive; neg, negative; ND, not done; S. japonicum, Schistosoma japonicum; S. haematobium, Schistosoma hematobium; CDA, cercarial dermatitis, asymptomatic.
†Patient tested positive on S. haematobium immunoblot.