The form of PEG matters: PEG conjugated with lipids and not PEG alone could be the specific form involved in allergic reactions to COVID-19 vaccines

ALLERGY

WILEY

1. Community of Madrid (Regional Ministry of Science, Universities, and Innovation, Madrid, Spain)
2. Strategic Health Action (AES 2020), Carlos III Health Institute, Spanish Ministry of Science and Innovation [PI20/00351]
3. European Regional Development Fund
4. Community of Madrid [2019--T1/BIO--12690]