Table 1

Number (N) of vaccinated patients, mode of vaccination, age range and mean (%) with concurring atopic diseases in addition to allergy to egg, serum-specific IgE range and median, according to allergic reaction to egg

Allergic reaction to eggPatients, N (%)Mode of vaccinationAge in months range (mean)Atopy (%)Asthma (%)Food allergy (%)Inhalation allergy (%)Eczema (%)SSIgE kU/l rangeSSIgE kU/l median
Serious reaction to egg19 (24)Fractioned vaccine dose29–198 (95)16 (84)11 (58)5 (26)7 (37)9 (47)1.0–>9912.8
Never exposed to egg19 (24)Fractioned vaccine dose10–120 (55)16 (84)11 (58)10 (53)5 (26)11 (58)1.7–9920.4
Mild reaction to egg42 (52)Single vaccine dose11–193 (75)31 (74)17 (40)17 (40)12 (29)18 (43)0.8–>9922.9
Total80 (100)10–198 (75)63 (79)39 (49)32 (40)24 (30)38 (48)0.8–>9917.0
  • The criterion for serious allergic reaction to egg was that the patient must have suffered from prior anaphylaxis, cardiovascular complications or collapse. This includes respiratory symptoms, hypotension and circulatory shock, and severe abdominal pain when exposed to egg or egg-containing baked goods.

  • Never exposed to egg means the parents stated that the kids had never been exposed to egg or egg-containing baked goods.

  • The criteria for mild allergic reaction to egg were prior mild gastrointestinal and dermatological reactions, including urticaria, angiooedema and vomiting when exposed to egg or egg-containing baked goods.

  • Food allergy refers to a diagnosed food allergy apart from egg allergy.

  • SSIgE refers to serum-specific IgE to egg protein.