Table 1.

Prevalence of Blastocystis sp. in humans in China.

Location	Method of diagnosis	No. examined	No. positive	Prevalence (%)	Diarrhea	Subtypes (n)	References
Guangdong	In vitro culture	2	2	100%	Yes		[24]
Jiangxi	In vitro culture	46,900	1122	2.39%	Yes		[59]
	PCR	3	3	100%	NG	ST5 (2), ST3 + ST5 (1)	[61]
Subtotal		469,903	1125	2.40%		ST5 (2), ST3 + ST5 (1)
Anhui	Smear/Iodine/Hematoxylin	703	26	3.70%	Yes		[57]
Chongqing	Smear	2558	35	1.37%	NG		[54]
Guangxi	Smear/Trichrome	1354	251	18.54%	Yes		[19]
	Smear	39,671	1551	3.91%	Yes		[15]
	Smear/Iodine	1185	145	12.24%	Yes		[16]
Subtotal		42,210	1947	4.61%
Yunnan	PCR	239	78	32.64%	NG	ST3 (56), ST1 (16), ST2 (1), ST4 (1), ST1 and 2 (1), ST1 and 3 (1), Unknown (3)	[21]
	PCR	170	10	5.88%	NG	ST3 (6), ST1 (3), ST2 (1)	[22]
	PCR	1020	37	3.63%	Yes		[47]
	Smear	215	43	20.0%	Yes		[65]
Subtotal		1644	168	10.22%		ST3 (62), ST1 (19), ST2 (2), ST4 (1), ST1 and 2 (1), ST1 and 3 (1), Unknown (3)
Shanghai	PCR	1505	29	1.90%	NG	ST3 (17), ST1 (6), ST2 (1), ST6 (1), ST1 and 3 (2), Unknown (2)	[21]
Zhejiang	PCR	646	153	23.68%	NG	ST3 (93), ST1 (38), ST2 (7), ST4 (1), ST1 and 3 (6), ST1 and 2 (1), ST2 and 3 (1), Unknown (6)	[21]
Beijing	Smear/Trichrome	122	6	4.92%	Yes		[50]
Henan	Smear/Iodine/In vitro culture	369	22	5.96%	Yes		[25]
Fujian	Smear/Iodine	10,652	85	0.80%	NG		[7]
Heilongjiang	PCR	381	27	7.10%	Yes	ST1 (12), ST3 (15)	[55]
Total		107,695	3625	3.37%		ST3 (186), ST1 (75), ST2 (10), ST4 (2), ST5 (2), ST6 (1), ST1 and 3 (9), ST1 and 2 (2), ST2 and 3 (1), ST3 + ST5 (1), Unknown (11)

NG: Not given.