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Table 4

Prevalence and subtype distribution of Blastocystis in humans by province in China.

Province No. positive/No. examined (%) Subtype (%)c
Refs.
ST1 ST2 ST3 ST4 ST5 ST6 ST7 ST12 ST1 + 2 ST1 + 3 ST2 + 3 ST3 + 5 Unknownc
Shanghai 29/1505 (1.93) 6 (20.7) 1 (3.4) 17 (58.7) 1 (3.4) 2 (6.9) 2 (6.9) [18]
Zhejiang 10/170 (5.88) 3 (30.0) 1 (10.0) 6 (60.0) [18]
Jiangxi 35a 13 (37.1) 2 (5.7) 14 (40.0) 5 (14.3) 1 (2.9) [49]
3a 2 (66.7) 1 (33.3) [50]
Guangxi 1a,b 1 (100) [53]
10a 8 (80.0) 2 (20.0) [54]
53a 4 (7.6) 17 (32.1) 4 (7.5) 1 (1.9) 5 (9.4) 22 (41.5) [55]
Yunnan 58/1440 (4.03)b 57 (98.3) 1 (1.7) [56]
12/324 (3.70)b 3 (25.0) 2 (16.7) 3 (25.0) 3 (25.0) 1 (8.3) [41]
153/646 (23.68) 38 (24.8) 7 (4.5) 93 (60.8) 1 (0.7) 1 (0.7) 6 (3.9) 1 (0.7) 6 (3.9) [18]
78/239 (32.64) 16 (20.5) 1 (1.3) 55 (70.5) 1 (1.3) 1 (1.3) 1 (1.3) 3 (3.8) [19]
13/289 (4.50) 3 (23.1) 8 (61.5) 1 (7.7) 1 (7.7)d This study
Heilongjiang 27/381 (7.09)b 12 (44.4) 15 (55.6) [57]
Total 160 (34.1) 13 (2.8) 220 (47.0) 9 (1.9) 2 (0.4) 2 (0.4) 8 (1.7) 1 (0.2) 2 (0.4) 14 (3.0) 1 (0.2) 1 (0.2) 36 (7.7)

–: negative results.

a

Only Blastocystis isolates were subtyped in some studies.

b

These Blastocystis isolates were identified and subtyped by PCR and sequencing, while others were subtyped by STS PCR.

c

Unknown subtypes of Blastocystis appearing in some studies were subtyped by STS PCR.

d

This DNA preparation was only amplified and sequenced successfully in approximately 260 bp of the SSU rRNA gene of Blastocystis.

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