![Suspicions grow that nanoparticles in Pfizer's COVID-19 vaccine trigger rare allergic reactions | Science | AAAS Suspicions grow that nanoparticles in Pfizer's COVID-19 vaccine trigger rare allergic reactions | Science | AAAS](https://www.science.org/do/10.1126/science.abg2359/abs/vaccine_1280p_3.jpg)
Suspicions grow that nanoparticles in Pfizer's COVID-19 vaccine trigger rare allergic reactions | Science | AAAS
![Annex A: Clinical Information - COVID-19 mRNA Vaccine BNT162b2 Pfizer/BioNTech Vaccine National Protocol - gov.scot Annex A: Clinical Information - COVID-19 mRNA Vaccine BNT162b2 Pfizer/BioNTech Vaccine National Protocol - gov.scot](https://www.gov.scot/binaries/content/gallery/publications/advice-guidance/2021/03/covid-19-mrna-vaccine-bnt162b2-pfizer-biontech-vaccine-national-protocol/SCT03211431062_g01.gif)
Annex A: Clinical Information - COVID-19 mRNA Vaccine BNT162b2 Pfizer/BioNTech Vaccine National Protocol - gov.scot
![What are the Ingredients and Excipients in the COVID-19 Vaccines? Update including Novavax Vaccine - Pharma Excipients What are the Ingredients and Excipients in the COVID-19 Vaccines? Update including Novavax Vaccine - Pharma Excipients](https://www.pharmaexcipients.com/wp-content/uploads/2020/09/Coronavirus-Vaccine-Development-1024x470.png)
What are the Ingredients and Excipients in the COVID-19 Vaccines? Update including Novavax Vaccine - Pharma Excipients
![VERIFY: What you should know about COVID vaccine allergic reactions - both minor and severe - YouTube VERIFY: What you should know about COVID vaccine allergic reactions - both minor and severe - YouTube](https://i.ytimg.com/vi/mBMFxYk8yiM/maxresdefault.jpg)
VERIFY: What you should know about COVID vaccine allergic reactions - both minor and severe - YouTube
![Allergenic components of the mRNA‐1273 vaccine for COVID‐19: Possible involvement of polyethylene glycol and IgG‐mediated complement activation - Klimek - 2021 - Allergy - Wiley Online Library Allergenic components of the mRNA‐1273 vaccine for COVID‐19: Possible involvement of polyethylene glycol and IgG‐mediated complement activation - Klimek - 2021 - Allergy - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/d541d4db-0e31-4c2f-8bb0-3bc28c0078cb/all14794-fig-0001-m.jpg)
Allergenic components of the mRNA‐1273 vaccine for COVID‐19: Possible involvement of polyethylene glycol and IgG‐mediated complement activation - Klimek - 2021 - Allergy - Wiley Online Library
![What We Know About PEG, Suspected as the Cause of Reactions to Pfizer's COVID-19 Vaccine | SnackSafely.com What We Know About PEG, Suspected as the Cause of Reactions to Pfizer's COVID-19 Vaccine | SnackSafely.com](https://media.snacksafely.com/wp-content/uploads/2020/12/PEG-2000-1068x564.jpg)
What We Know About PEG, Suspected as the Cause of Reactions to Pfizer's COVID-19 Vaccine | SnackSafely.com
![Vaccines | Free Full-Text | Cutaneous Adverse Reactions to COVID-19 Vaccines: Insights from an Immuno-Dermatological Perspective Vaccines | Free Full-Text | Cutaneous Adverse Reactions to COVID-19 Vaccines: Insights from an Immuno-Dermatological Perspective](https://pub.mdpi-res.com/vaccines/vaccines-09-00944/article_deploy/html/images/vaccines-09-00944-g001.png?1630140700)