Hi Denis,

Yes, it is possible determine by skin tests sensitization both to vaccines and the potential allergens present among the components of the vaccines' formulation.

Dear Denis,

I should disagree with María Luisa Caballero, I am afraid. Although in principle skin testing may be helpful, the sensitivity and specificity of skin tests in predicting SARS-CoV-2 vaccine reactions remain unknown. Thus, it is not suitable to use this approach in routine clinical practice.

Recently we study the use of ID test to analyze the cell immune response in COVID19 infected patients in Journal Inmunology

Allergic reactions can be due to allergy to vaccine ... Immediate hypersensitivity or allergic reactions to ... A prick skin test is performed with the vaccine diluted 1:10, and if ... https://waojournal.biomedcentral.com/articles/10.1186/s40413-016-0120-5

Check https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7237901/

Also check https://www.mountsinai.org/health-library/tests/allergy-testing-skin

People are allergic to different things, since vaccinations involves pricking the skin, the person will definitely have allergic reactions.