Leading COVID Vaccine Candidates Plagued by Safety Concerns By Alix Mayer, MBA for Children’s Health Defense
Unproven technologies, unsafe ingredients and inadequate testing — fortunately, current law prohibits mandating unlicensed vaccines approved for “emergency use.”
“It works!” trumpeted the normally stoic Nature journal about Pfizer’s early release results in a Phase III trial of its vaccine for COVID-19. Pfizer stated the vaccine was 90% effective when trial participants were exposed to SARS CoV-2, the virus said to cause COVID-19 symptoms.
Not so fast. Pfizer’s study protocol states cases count even if a trial participant has a positive test and only one symptom — like a cough, chills or diarrhea — that could easily be caused by one of 1,400 human pathogens, including 200 viruses known to infect humans. Except for Hepatitis A, B, C and HIV, the study protocol is silent on testing for other infectious causes of the participant’s symptoms.
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In other words, the study suffers from confirmation bias. A cough and a positive test equals COVID, even when an “alternative possible diagnosis” could be the real cause of the symptoms. Absence of evidence is not evidence of absence.
Pfizer, partnering with BioNTech, uses new messenger RNA (mRNA) technology in their vaccine, and will apply for a coveted Emergency Use Authorization from the U.S. Food and Drug Administration (FDA), likely before the end of November. Pfizer’s announcement comes after 94 trial participants — of more than 43,000 — tested positive for SARS CoV-2. Pfizer has not released data on whether the cases were mild, moderate or severe.
Early results may sound encouraging to some, but experts like Eric Topol, director of the Scripps Research Translational Institute, indicated “the vaccine may not turn out to be as effective once the trial is complete and all the data has been analysed [sic],” however “its effectiveness is likely to stay well above 50%.” Pfizer’s study protocol (p. 103) states “success at the final analysis” will achieve a minimum 30% efficacy, with greater than 98% certainty. We hope the vaccine is not 30 to 90% effective against mild illness.
Will the Pfizer vaccine work, and is it safe? Questions remain. Any vaccine, including all COVID-19 vaccines, must be proven both safe and effective before being administered to high-risk groups or to the global population.
