Those raising evidence-based concerns about the adverse effects of COVID-19 vaccines are often labeled purveyors of misinformation, and derided as anti-scientific conspiracy theorists and paranoid kooks. Or worse. Bill Kristol tweeted in late 2021 that, “there is blood on the hands in 2021 of the unvaccinated and especially their enablers and encouragers who know better.” However, there are a number of prominent scientists, doctors, and independent researchers who are wary of both COVID infection and the vaccines. Many of these figures are worried about one particular piece of the SARS-CoV-2 virus: the spike protein, which allows the virus to enter...