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Table 1 Clinical and travel history of patients with Giardia assemblage A or B infection

From: Determination of Giardia duodenalis assemblages and multi-locus genotypes in patients with sporadic giardiasis from England

   

Assemblage n (%)**

 

Variable

No.*

A

B

p-value

Diarrhoea

141

49 (96.1)

89 (98.9)

0.296

Blood in stools

129

5 (11.1)

1 (1.2)

0.019

Vomiting

130

18 (40)

52 (61.2)

0.027

Abdominal pain (cramps)

135

34 (71)

69 (79)

0.268

Fever

126

19 (45.2)

40 (48)

0.801

Median length of illness in days (range), in patients no longer ill when contacted

72

10 (1–50)

18 (4–73)

0.019

Admitted to hospital due to illness

133

8 (16.3)

5 (6)

0.070

Travel abroad (outside UK)

142

16 (31.4)

23 (25.3)

0.435

Travel abroad to at-risk destinations

No travel abroad

142

35 (68.6)

68 (74.7)

<0.001

Abroad, not at-risk destination

11 (21.6)***

2 (2.2)***

Abroad, at-risk destination~

5 (9.8)***

21 (23.1)***

  1. *number of participants that answered the question; **number of A and B patients with percentages calculated relative to those that answered the question; ~ including Asia and Middle East (with Turkey), Africa, Central and South America; ***proportions differing significantly from each other with p < 0.05