It's important to keep in mind, however, that PEG has had a long history of safe use as part of FDA-approved drug formulations, and these vaccine allergies could be caused by things other than PEG.
Sin embrago, es importante recordar que el PEG viene siendo usado de forma segura en fórmulas de fármacos aprobados por la FDA, y la alergia a las vacunas puede ser causada por otros factores.