Fears about self-amplifying mRNA vaccines circulate online

On November 11, Arcturus Therapeutics announced that the FDA cleared a clinical trial for a self-amplifying mRNA vaccine for H5N1 avian influenza. Vaccine opponents responded to the news with conspiracy theories about the vaccine being dangerous and “shedding” to unvaccinated people. Popular posts described the vaccine as “reckless,” a “disaster waiting to happen,” and a “​​gain-of-function [experiment] inside the human body.” Several posts attempted to link the experimental vaccines to conspiracy theories about Bill Gates and called for a “clean house” at the FDA.

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The Public Health Communications Collaborative (PHCC) was formed in 2020 to coordinate and amplify public health messaging on COVID-19 and increase Americans’ confidence in guidance from the Centers for Disease Control and Prevention (CDC) and state and local public health officials.

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