Table 1.

Patient characteristics

	Katayama syndrome (N = 9)	No Katayama syndrome (N = 11)	Controls (no infection; N = 8)
Male/female	4/5	4/7	5/3
Mean age in years	52.0	52.1	22
Number of subjects positive for Schistosoma spp. eggs in stool or urine in 1991	7 (78%)	7 (64%)	–
S. mansoni	3 (33%)	1 (9%)	–
S. intercalatum	1 (11%)	0	–
S. haematobium	0	1 (9%)	–
S. mansoni and S. intercalatum	2 (22%)	2 (18%)	–
S. mansoni and S. haematobium	0	2 (18%)	–
S. mansoni, S. intercalatum, andS. haematobium	1 (11%)	1 (9%)	–
No eggs found	2 (22%)	4 (36%)	–
Number of subjects positive for Schistosoma spp. eggs in stool or urine in 1999	0	0	–