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Table 1 Clinical characteristics and allergological study of patients with suspected allergic reactions

From: Allergological study in patients vaccinated against COVID-19 with suspected allergic reactions

Patient Nº

Age

Sex

Atopy

Vaccine (dose at which the reaction occurred)

Start and type of reaction (approximate information)

Signs and symptoms

Treatment prescribed

IDT with vaccinea

Continuation of the vaccination program

1

40

F

Yes

Comirnaty® (1st dose)

5’ (immediate)

Facial paresthesias with peribucal burning and dizziness

Saline solution

1/100: + 1/10: + Undiluted: + 

2nd dose Comirnaty®: YES (gradual with premedication)b

2

55

F

Yes

Comirnaty® (1st dose)

5’ (immediate)

Pruritus on the palate, dyspnea with 80% SatO2, generalized burning sensation, chronic diarrhea (3 months, from 10 days after vaccination)

IV corticoids IV and adrenaline

1/100: + 1/10: + 

Undiluted: + 

2nd dose Comirnaty®: NO (refused vaccination)

3

73

M

Yes

Comirnaty® (1st dose)

72 h (Delayed)

Nausea and facial angioedema

IV corticoids and H1A

1/100: −

1/10: + 

Undiluted: + 

2nd dose Comirnaty®: YES (gradual with premedication)b

4

73

F

Yes

Comirnaty® (1st dose)

30–36 h (Delayed)

Acute generalized urticaria

IV corticoids and H1A

1/100: −

1/10: −

Undiluted: −

2nd dose Comirnaty®: YES

5

76

F

No

Comirnaty® (1st dose)

36–48 h (Delayed)

Generalized pruritus with dyspnea, abdominal swelling, ankle edema, possible subsegmental pulmonary thromboembolism, mild erythematous rash on arms and neckline

IV corticoids and H1A

1/100: −

1/10: −

Undiluted: −

2nd dose Comirnaty®: NO (refused vaccination)

6

68

M

No

Comirnaty® (1st dose)

60’ (Immediate)

Wheals on upper limbs

No

1/100: −

1/10: −

Undiluted: -

2nd dose Comirnaty®: YES

7

29

F

Yes

Comirnaty® (1st dose)

5’ (Immediate)

Generalized erythematous rash with a few papules and facial angioedema, more intense at 24 h

IV corticoids and H1A

1/100: + 

1/10: + 

Undiluted: not done

2nd dose Comirnaty®: YES (gradual with premedication)b

8

75

M

Yes

Comirnaty® (1st dose)

6 h (Delayed)

Red-vinous macules on lower limbs, upper limbs, thorax and back without itching of 3 weeks of evolution

IM and oral corticoids and H1A

1/100: −

1/10: −

Undiluted: −

2nd dose Comirnaty®: YES

9

58

F

Yes

Comirnaty® (1st and 2nd dose)

 > 24 h (Delayed)

With the 1st dose, local swelling at 24 h and generalized urticaria at 48 h

With 2nd dose, maculopapular rash and coldness in lower limbs at 24 h

H1A

1/100: −

1/10: + 

Undiluted: + 

2nd dose Comirnaty®: NO (had passed COVID-19 two months before reaction)

10

51

F

No

Comirnaty® (1st dose)

5’ and 24 h (Immediate and delayed)

At 5', erythematous rash on neckline

At 24 h, angioedema on the arms and hemiface

IV corticoids and H1A

1/100: + 

1/10: + 

Undiluted: + 

2nd dose Comirnaty®: YES (gradual with premedication)b

11

28

F

Yes

Comirnaty® (2nd dose)

10’ (Immediarte)

Pruritus of the tongue and throat, possible edema of the uvula and swelling of the neck

IV and oral corticoids

1/100: −

1/10: + 

Undiluted: + 

Not necessary (he received the two doses)

12

17

F

No

Comirnaty® (1st dose)

48 h (Delayed)

Wheals on the injection arm, fever and facial angioedema

Oral corticoids and H1A

1/100: −

1/10: + 

Undiluted: + 

2nd dose Comirnaty®: NO (had passed COVID-19 one month before reaction)

13

54

F

No

Spikevax® (2nd dose)

12–24 h (Delayed)

Fever, generalized urticaria and arthromyalgia

H1A

1/100: −

1/10: + 

Undiluted: + 

Not necessary (he received the two doses)

14

60

F

No

Vaxzevria® (1st dose)

30’ (Immediate)

At 30', generalized erythematous and pruritic rash, dizziness and bruises on lower limbs

At 17 days, post-vaccinal headache

IV corticoids, H1A and adrenaline

1/100: + 

1/10: + 

Undiluted: + 

2nd dose Comirnaty®: NO (refused vaccination)

15

61

M

Yes

Vaxzevria® (1st and 2nd dose)

40 h (Delayed)

Acute urticaria-angioedema with both doses

IV corticoids and H1A

1/100: −

1/10: −

Undiluted: −

Not necessary (he received the two doses)

16

24

F

Yes

Vaxzevria® (1st dose)

10’ and 28 days (Immediate and delayed)

At 10', abdominal pain, stridor and dyspnea

At 28 days, dizziness, vomiting, facial paralysis, severe headache, numbness of lower limbs for < 24 h

IV corticoids and adrenaline

1/100: −

1/10: + 

Undiluted: + 

2nd dose Vaxzevria®: NO (refused vaccination)

  1. IV: intravenous; IM: intramuscular; H1A: H1-antihistamines; F: female; M: male
  2. aThe results for the 24 and 48 h readings were the same
  3. bPremedication consisted of chlorpheniramine 4 mg and prednisone 30 mg 13 h and 1 h before vaccination