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CDC Made ‘Inconsistent Statements’ About Data Generated to Analyze Vaccine Adverse Event Information for COVID Shots

Photo: CDC Made ‘Inconsistent Statements’ About Data Generated to Analyze Vaccine Adverse Event Information for COVID Shots

The director of the Centers for Disease Control and Prevention (CDC) said in a letter made public this week that her agency did not perform a specific type of analysis on reports to the Vaccine Adverse Event Reporting System (VAERS) for COVID vaccines at any time during 2021, despite CDC stating it had begun to do so in February of that year.

Dr. Rochelle Walensky wrote to Sen. Ron Johnson (R-WI), in a letter dated September 2 and sent September 6, that CDC performed PRR (proportional reporting ratio) analysis on reports to VAERS, which the agency manages, “between March 25, 2022 through July 31, 2022, to corroborate the results of EB (Empirical Bayesian) data mining,” which Walensky described as “a more robust technique used to analyze disproportionate reporting.”

“Notably, results from PRR analysis were generally consistent with EB data mining, revealing no additional unexpected safety signals,” she wrote.

Walensky also noted to Johnson “CDC also recently addressed a previous statement made to the Epoch Times to clarify PRR were not run between February 26, 2021, to September 30, 2021.”

As reported by The Epoch Times, CDC announced in several documents, beginning in January 2021, that it would be running PRR analysis on VAERS reports.

In a document titled “Vaccine Adverse Event Reporting System (VAERS) Standard Operating Procedures (SOP) for COVID (as of 29 January 2021)” the agency stated:

CDC and FDA will perform routine VAERS surveillance to identify potential new safety concerns for COVID-19 vaccines. This surveillance will include generating tables summarizing automated data from fields on the VAERS form for persons who received COVID-19 vaccines (e.g., age of vaccinee, COVID-19 vaccine type, adverse event).

The executive summary of the SOP document dated “as of February 2, 2022,” included the same lead paragraph as that from the previous year.

“But the agency said in June that it did not perform PRRs,” noted The Epoch Times. “It also said that performing them was ‘outside th[e] agency’s purview.’”

In a letter dated June 16, Roger Andoh, CDC FOIA (Freedom of Information Act) Officer wrote to Divyanshi Dwivedi of Children’s Health Defense:

[P]rogram staff within the Immunization and Safety Office inform me that no PRRs were conducted by CDC. Furthermore, data mining is outside of the agency’s purview; staff suggest you inquire with FDA.

“Confronted with the contradiction, Dr. John Su, a CDC official, told The Epoch Times in July that the agency started performing PRRs in February 2021 and ‘continues to do so to date,’” the news outlet reported. “But just weeks later, the CDC said Su was wrong.”

A CDC spokesperson reportedly told The Epoch Times in August the agency “performed PRRs from March 25, 2022 through July 31, 2022.”

Walensky’s new letter to Johnson shows that she “is aware that her agency gave false information,” the Times reported.

In response, Johnson, the ranking member on the Senate Homeland Security and Governmental Affairs Subcommittee on Investigations, wrote back to Walensky on September 12, referring to her response to his letters regarding CDC’s surveillance of VAERS as “inadequate and unacceptable”:

You have failed to explain why the CDC made inconsistent statements about the data it generates to track these adverse events. Moreover, even though I clearly asked CDC to provide the data that it supposedly generated to track vaccine adverse events, you failed to do so. This data should be made public immediately to better inform the American people about risks of specific adverse events relating to the COVID-19 vaccines. Your lack of clarity calls into question whether CDC has and continues to sufficiently monitor COVID-19 vaccine adverse events.

“You also provided no explanation as to why Dr. Su’s assertion … completely contradicts the CDC’s [initial] response … as well as your September 6, 2022, response to me,” he added.

The Epoch Times reported a CDC spokesperson said in an email statement in August, “At no time have any CDC employees intentionally provided false information.”

The revelation of Walensky’s and her agency’s “inconsistent statements” about the analysis of VAERS data comes a month after the CDC director announced a makeover of the agency – one that is supposedly intended to “restore public trust.”

Approximately a week after that announcement, Walensky was back on the air promoting newer COVID vaccine boosters, for which authorization had been sought using the submission of only mouse data.

Echoing White House chief medical advisor Dr. Anthony Fauci, Walensky said on a radio broadcast of “Conversations on Health Care” in late August, “If we wait for those data to emerge in human data, not just mice data, we will be using what I would consider to be a potentially outdated vaccine.”

At the same time, the CDC director urged anyone eligible at the time to obtain the current booster.

“We have now given over 600 million doses of this vaccine in this country so we have an extraordinary safety profile, probably unlike any we’ve seen with any vaccine in history,” she said.


This content is solely for educational and discussion purposes. Any treatment undertaken in terms of COVID (or any illness) should be discussed with a licensed medical professional.

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