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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