Vaccines and Vaccinations

Suspicions grow that nanoparticles in Pfizer's COVID-19 vaccine trigger rare allergic reactions

02-03-2021 • https://www.sciencemag.org, By Jop de Vrieze

Severe allergy-like reactions in at least eight people who received the COVID-19 vaccine produced by Pfizer and BioNTech over the past 2 weeks may be due to a compound in the packaging of the messenger RNA (mRNA) that forms the vaccine's main ingre