Signs (%)               

Frequency

Vital Signs

Results Mean ± SD

All

Sporadic

Outbreak

P Value

All

Sporadic

Outbreak

P Value

General weakness

86

92

84

0.455

Systolic blood pressure (mmHg)

112 (18.4)

107.7 (18.2)

114.2 (18.5)

0.286

Dizziness  

78

70

80

0.399

Diastolic blood pressure (mmHg)

71.5 (11.8)

73.3 (11.5)

70.8 (12.1)

0.536

Headache

51

20

62

0.026

Pulse rate (bpm)

88.3 (19)

89.9 (24.0)

87.8 (17.2)

0.748

Constipation  

41

25

47

0.166

Respiration rate (bpm)

19 (5.3)

21.4 (6.9)

18.1 (4.4)

0.145

Symptoms (%)               

Body temperature (c º)

37 (0.48)

37.1  (0.5)

37.0 (0.5)

0.371

Blurred vision

60

50

63

0.351

Paraclinical findings

Results Mean ± SD

Dry mouth

71

39

65

0.104

Nausea

57

58

56

0.588

All

Sporadic

Outbreak

P Value

Ptosis

91

91

91

0.733

Admission period (days)

5.3 (7.1)

5.1 (2.7)

5.4 (8.2)

0.907

Vomiting

25

33

22

0.339

Diplopia

81

67

87

0.146

Onset symptoms period (weeks)

8.3 (9.6)

3.8 (6.2)

9.1 (10.0)

0.312

Dysphagia

81

46

94

0.002

Elapsed period(hours)

40.2 (33.6)

17.7

47.2

0.026

Difficult speech

79

92

74

0.204

CPK (U/L)

146.9 (122.5)

101.7 (50.0)

159.9 (134.6)

0.314

Inability to keep the neck

33

30

33

0.586

Na (meq/L)

138.3 (4.5)

138.4 (4.8)

138.3 (4.5)

0.894

Mydriasis

14

36

7

0.320

K (meq/L)

4.0 (0.4)

4.2 (0.5)

4.1 (0.5)

0.509

Drooling

11

15

10

0.467

Creatinine (mg/L)

0.85 (0.2)

0.9 (0.3)

0.4 (0.2)

0.582

Hoarseness

0

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