The US Centers for Disease Control and Prevention (CDC) didn’t include serious adverse events like heart inflammation on post-vaccination surveys even though the agency knew the issues could be linked to COVID-19 vaccines, documents show.
Even before the surveys were rolled out in December 2020 after the first vaccines were authorized, the CDC knew that myocarditis—a form of heart inflammation since confirmed as being caused by the Pfizer and Moderna shots—and other serious adverse events were of “special interest” when it came to the vaccines, according to a newly disclosed version of the protocol for the survey system.
The Nov. 19, 2020, protocol for V-safe, the survey system, lists myocarditis, stroke, death, and a dozen “prespecified medical conditions.” The protocol was obtained by the Informed Consent Action Network (ICAN), a nonprofit that seeks transparency around health information. All of the conditions can cause severe symptoms.
V-safe is a system of surveys that was introduced during the COVID-19 pandemic to monitor vaccine safety. It was developed and is managed by the CDC.
Updated versions of the protocol list the same 15 adverse events.
None of the conditions were included in the actual surveys.
Respondents could check boxes if they experienced certain symptoms, but only 10 lower-level problems such as fever and nausea were listed as options.