evidence: In the video, McCullough, a cardiologist who has become known for spreading disinformation, talks about the pandemic and mRNA vaccines, claiming that patients were incorrectly treated and that the vaccines have caused a second "wave of injury", following the first wave of Covid-19 itself. Ultimately, he calls for the vaccines to be banned. [...] Amount of vaccine mRNA declines over time [...] However, while possible links between vaccines and many conditions are researched, causal links between mRNA vaccines and most of the conditions have not been established.