A new Israeli study states: People who have experienced a mild to moderate allergic reaction after receiving the first vaccine dose to Corona can receive the second vaccine dose, in most cases without any further allergic reaction and without clarifying the allergy.
The study was conducted at Assaf Harofeh, Meir and Bnei Zion hospitals.
The study included 18 patients who experienced allergic reactions after the first vaccine dose.
Half of them also had previous allergies.
The average time received for the first vaccine dose until the onset of the reaction was about half an hour.
Eleven patients experienced immediate but not life-threatening reactions, and 7 patients experienced generalized multi-system responses.
The mild allergic reactions were abstract rash and swelling of the face, runny nose, stuffy nose and hoarseness, and the more severe - cough and shortness of breath.
Patients underwent a skin allergy test, both for the vaccine itself and its components, and were negative.
All patients received the second dose of vaccine under supervision.
14 patients had no allergic reaction and 4 experienced only mild reactions, treated with allergy pills.
The study was conducted by Prof. Arnon Elitzur, director of the Institute of Allergy and Immunology for Children at Assaf Harofeh, and his colleagues from Bnei Zion and Meir Hospitals.
He said, "This study shows that vaccinated people who have experienced an immediate mild-to-moderate response to the first vaccine do not need to be screened, including skin tests, before receiving the second vaccine.
"Patients who have experienced an immediate severe reaction to the first vaccine are advised not to receive additional doses and seek the evaluation of an allergist." As of the end of June, a prevalence of 55 allergic reactions was reported in Israel per million vaccinated in the first dose, and 27 per million in the second dose.
The Ministry of Health's vaccination guide instructs not to give a vaccine in a second dose to those who experience a severe allergic reaction to the first dose.