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Table 4 The clinical presentation of Shigella flexneri and Shigella sonnei infections.

From: A changing picture of shigellosis in southern Vietnam: shifting species dominance, antimicrobial susceptibility and clinical presentation

  S. flexneri S. sonnei pvaluea
Pateints n = 123 n = 147  
Age (months)d 25 (12 - 42) 23 (14 - 36) 0.105
Weight (kg) 11 (8.5 - 14) 10 (9.9 -13) 0.558
Male sex (%) 55 (44.7) 83 (56.5) 0.055
Patient history    
Days 2 (2 - 3) 1 (1 - 2) < 0.001
Fever (%) 117 (95) 141 (96) 0.761
Abdominal pain (%) 64 (52) 84 (57.1) 0.48
Vomitting (%) 60 (48.8) 74 (50.3) 0.78
Watery diarrhea (%) 78 (63.4) 86 (58.5) 0.41
Bloody/mucoid diarrhea (%) 97 (78.9) 117 (80) 0.88
Diarrhea episodes per day 10 (5 - 10) 8 (5 - 10) 0.051
Convulsions (%) 9 (7.3) 21 (14.3) 0.07
Known pretreatment (%) 7 (5.7) 7 (4.8) 0.585
Clinical details    
White cell count (× 103/mm3) 10 (8 - 13.6) 12 (10.5 - 15.5) 0.029
Red cells in stoolb 1 1 0.056
White cells in stoolb 3 3 0.173
Mucoid duration (hrs) 36 (24 - 53.5) 25 (18 - 48) 0.054
Diarrhea duration (hrs) 48 (39 - 72) 48 (27 - 72) 0.088
Duration of illness    
Hospital stay (days) 5 (4 - 5) 4 (3 - 5) 0.276
Disease duration (days)c 7 (6 - 8) 5 (4 - 7) 0.009
  1. a p Values calculated using either the Chi-square test or the Kruskal-Wallis test
  2. b Cells in Stool assessed as described in methods
  3. c Disease duration calculated by addition of history of disease and stay in hospital
  4. d Interquartile range values in brackets unless stated