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The Epoch Times
The Epoch Times
22 Jul 2023


NextImg:EXCLUSIVE: CDC Changed Definition of Breakthrough COVID-19 After Emails About 'Vaccine Failure'

The U.S. Centers for Disease Control and Prevention (CDC) altered its definition of COVID-19 cases among the vaccinated, leading to a lower number of cases classified as a breakthrough, according to documents obtained by The Epoch Times.

The CDC in early 2021 defined the post-vaccination cases as people testing positive seven or more days after receipt of a primary vaccination series, according to one of the documents.

The definition was changed on Feb. 2, 2021, to only include cases detected at least 14 days after a primary series, another document shows.

“We have revised the case definition,” Dr. Marc Fisher, the lead of the CDC’s Vaccine Breakthrough Case Investigation Team, wrote to colleagues at the time.

The rationale for the change was redacted.

A CDC spokesperson defended the altered definition.

“CDC made the change to the definition of a breakthrough infection time period due to the most current data that showed that the 14-day period was required for an effective antibody response to the vaccines,” Scott Pauley, the spokesman, told The Epoch Times in an email.

“That, in combination with the data showing that many cases of COVID-19 were incubating for up to two weeks before becoming symptomatic, required the change to refine the time period to eliminate cases where exposure happened before the vaccination response would be effective,” Mr. Pauley added.

Dr. Harvey Risch, professor emeritus of epidemiology at the Yale School of Public Health, said there was “no cogent rationale” for excluding early cases and other events among the vaccinated, whether they occurred within seven days or 14 days.

“With either of these delays, CDC addressed what is the theoretical best that the vaccination could achieve. If the vaccines don’t work for the first 7 or 14 days or increase risk of getting Covid-19 during that period, that is part of what happens when they are deployed in a population,” Dr. Risch told The Epoch Times via email.

Dr. Jay Bhattacharya, professor health policy at Stanford University, said that the CDC should have been focused on advising people that they weren’t as protected immediately after vaccination.

“Rather than playing games with the definition of breakthrough cases,” Dr. Bhattacharya told The Epoch Times in an email, the CDC should have warned “recently vaccinated vulnerable older people that they were at higher risk for being infected during that period.”

An internal CDC email obtained by The Epoch Times. (The Epoch Times)

The CDC excluded some postvaccination cases because they did not meet the updated definition, the documents show, providing an inflated view of vaccine effectiveness.

One document, for instance, shows that Kansas in early 2021 reported 37 cases among the vaccinated.

Thirty-four were not counted because they occurred after receipt of one dose, not two. A primary series for both vaccines was two doses until recently, with the second dose not advised until at least 21 days after the first dose.

The other three cases happened after a second dose, but they were not counted as breakthrough cases by the CDC because they happened within 13 days of completion of a primary series, Dr. Fisher informed colleagues in an email.

On Jan. 29, 2021, the CDC learned in a call with Maryland health officials that a cluster appeared to stem from a person who was vaccinated with a single dose before experiencing symptoms. A CDC official said it was a “possible breakthrough case,” but the case would not have been counted under the earlier or later breakthrough definition.

In another likely form of suppression of the true number of cases, states weren’t able to report cases through the National Notifiable Diseases Surveillance System until February 2021, according to one of the emails. Kansas was the first state to send info through the system, according to a Feb. 1, 2021, email reporting the 37 cases.

States could also report cases outside of the system through calls, as could health care providers, according to another email. Reports to the Vaccine Adverse Event Reporting System were also analyzed for possible inclusion.

The CDC started reporting the number of breakthrough cases on April 15, 2021. Some of the breakthrough cases led to hospitalization and death. CDC officials discussed breakthrough cases sporadically in public settings, but also made false claims about vaccine effectiveness, including claiming in March 2021 that vaccinated people did not get sick.

COVID-19 vaccines in Washington in a Dec. 14, 2020, file photograph. (Jacquelyn Martin/Pool/AFP via Getty Images)

The breakthrough case definition was revised after multiple CDC officials emailed about the vaccines failing to prevent infection.

Dr. Fisher said in one missive on Dec. 21, 2020, that he was directed by a superior “to start working on a protocol to evaluate COVID vaccine failures or breakthrough cases.”

Dr. Rochelle Walensky, the CDC director at the time, highlighted an editorial on Jan. 30, 2021, that described variants as a “growing threat” of escaping the protection from vaccines and said she’d spoken to the head of the U.S. National Institutes of Health about the matter.

Around the same time, CDC officials circulated a one-page document about investigating post-vaccination cases.

“What? There is a 1-pager from Tom about vaccine failures?” Dr. Nancy Messionnier, another top CDC official, said on Jan. 27, 2021, after hearing about the document, which was being distributed by CDC medical officer Dr. Thomas Clark.

The version of the document The Epoch Times received was fully redacted. After Dr. Clark was asked for an unredacted version, the CDC declined to provide any other versions of the document.

Dr. Fisher also made a presentation near the end of January 2021 on breakthrough cases and sent those slides to colleagues after emphasizing he’d developed them “for internal use” and that the slides “have not been reviewed or cleared by anyone.” Dr. Fisher did not respond when asked for the slides.

Soon after the change, the CDC was alerted to a college athlete who tested positive for COVID-19 about three weeks after completing a Pfizer primary series. One CDC official described it as a “potential breakthrough case” and said data would have to be reviewed to see whether it would be counted.

In a document distributed to states, the CDC outlined a number of ways post-vaccination cases, even one detected at least 14 days after a primary series, would not be counted. That included excluding people who received a vaccine that was not authorized in the United States, people with only a positive antibody test, and people who tested positive within 44 days of their latest test.

The CDC initially floated (pdf) counting a person as “fully vaccinated” as early as seven days after completion of a primary series but ultimately settled on 14 days after completion.

The CDC declined to provide the name of the official who decided on the definition of fully vaccinated. The agency, in response to a Freedom of Information Act, also said it did not have any records on deciding to exclude cases that occur in what amounts to at least 35 days after the first vaccine dose.

Officials pointed to U.S. Food and Drug Administration (FDA) materials that outlined the results from clinical trials from Pfizer and Moderna, which make the vaccines that the FDA authorized in 2020.

The trials found efficacy against symptomatic COVID-19 was much lower within days of vaccination. In Pfizer’s trial, for instance, suspected cases within seven days of a vaccine dose were 409 among the vaccinated versus 287 among placebo recipients. Moderna estimated a 50.8 percent efficacy within 14 days of dose one, compared to 92 percent efficacy 15 or more days after the dose.

Observational data have also indicated lower or negative shielding in the days after vaccination, and almost immediately after the vaccines were rolled out, some vaccinated people were reporting getting infected anyways.