Suspicions grow that nanoparticles in Pfizer’s COVID-19 vaccine trigger rare allergic reactions | Science | AAAS Posted on 14/01/2021 by CHRYS CHRYSTELLO Views: 2Life-threatening responses seen in at least eight people could be linked to polyethylene glycol, known to trigger reactions to some drugs Source: Suspicions grow that nanoparticles in Pfizer’s COVID-19 vaccine trigger rare allergic reactions | Science | AAAS Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Like this:Like Loading… Related