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YaleNews

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Dec 3, 2025

What studies have measured circulating spike protein levels after mRNA COVID-19 vaccination?

Several research teams have measured circulating SARS‑CoV‑2 spike protein following mRNA COVID‑19 vaccination: a peer‑reviewed plasma study linked free full‑length spike to post‑vaccine myocarditis (m...

Nov 29, 2025

Can COVID vaccination affect routine labs like liver enzymes or blood counts long-term?

Available monitoring and large studies to date have not identified widespread, long-term changes in routine labs (like persistent liver enzyme elevations or chronic cytopenias) caused by COVID-19 vacc...