Stanley Plotkin, known as the "godfather of vaccines," developed the rubella vaccine at the Wistar Institute and remains a prominent consultant to major vaccine manufacturers including Sanofi, Merck, and Pfizer.
Described as the "godfather of vaccinology," Dr. Stanley Plotkin is the world's most influential vaccinologist — the author of Plotkin's Vaccines (the field's definitive textbook), inventor of several major vaccines, and a decades-long presence at CDC's vaccine policy committee (ACIP). He was deposed for nine hours in January 2018 by Aaron Siri, a deposition documented in Plotkin Deposition 2018.
Background
Peer-reviewed publications: Listed as author on approximately 900 peer-reviewed articles, reviews, abstracts, and letters in medical journals, 1958–2025 — more than anyone alive or dead in the vaccine field.
Textbook: Creator and editor of Plotkin's Vaccines (8th edition), described by a CDC Director as having "global impact" and by Bill Gates as "the bible for vaccinologists." Plotkin quipped: "I hope it is more accurate than the Bible."
Journal influence: Editor for every major vaccine-related journal, including Vaccine.
ACIP attendance: Attended virtually every CDC Advisory Committee on Immunization Practices (ACIP) meeting for six decades; treated as a "demigod" at these meetings (public videos confirm deference). ACIP meetings are public; the working groups Plotkin participated in met in secret with no transcripts.
Namesakes: The ACIP gavel is named the "Stanley A. Plotkin ACIP Gavel." The Pediatric Infectious Diseases Society gives the "Stanley A. Plotkin Award for Excellence in Vaccinology."
Principal investigator: Was listed as principal investigator in the Recombivax HB (Hep B) clinical trial for children — the same trial he admitted during deposition he did not know monitored safety for only 5 days.
Role in Vaccine Policy
Plotkin shaped the field of vaccinology across every channel available to him: authorship, editorship, textbook, lectures, ACIP attendance and working groups, and vaccine development. His protégés — Paul Offit, Tina Tan, Kathryn Edwards, Gregory Poland, and others — trained under him and now occupy the senior vaccinology posts at major medical institutions, repeating his approach.
He was the expert witness for the father in a family law case (the context for the Plotkin Deposition 2018) and held the opinion that the child should receive every vaccine on the CDC schedule, despite knowing nothing about the specific child.
Conflicts of Interest / Affiliations
Pharma consulting: Consulted for Merck, Pfizer, Sanofi, and GSK for decades. No year since 1990 without payment from Sanofi; ongoing expected payments from Merck, GSK, and Pfizer.
Corporate boards: Sat on corporate boards of major vaccine manufacturers.
Royalties: Received an undisclosed portion of more than $182 million in royalties from rubella, rotavirus (RotaTeq), and rabies vaccine sales. CHOP sold its RotaTeq interest in 2008 for $182M; Plotkin confirmed he received a portion.
Deposition testimony on conflicts: Testified that receiving millions from pharma companies over decades was "not relevant" to his opinion on whether a child should be vaccinated. (Deposition, p. 14)
Key Statements (from deposition)
On safety monitoring for Recombivax HB: Confirmed safety was monitored for 5 days, and acknowledged this is not long enough to detect autoimmune or neurological disorders.
On Engerix-B monitoring: Claimed safety may have been collected beyond 4 days, but when pressed, admitted: "Yes, that's speculation based on experience." — Later subpoenaed and never provided proof.
On hepatitis B and encephalitis: "No, I would say definitely not" — despite IOM finding "inadequate evidence to accept or reject" causation.
On IOM's 135 harms: Argued that no data means vaccines don't cause the harm — then admitted this is different from saying they don't cause it.
On DTaP/Tdap and autism: Confirmed IOM found no studies ruling it out, studies are possible, yet "I do not wait… Absolutely" would tell parents it doesn't cause autism.
On Gregory Poland's tinnitus: "I am sorry for Dr. Poland, but there is no way to know if it was caused by the vaccine… mechanistic studies are needed."
On his pharma payments being relevant: "I guess, no, I did not perceive that that was relevant to my opinion."
Key Admission: Principal Investigator Who Didn't Know
When Siri revealed the 5-day safety window for Recombivax HB, Plotkin did not know this. FDA documentation later confirmed Plotkin was the principal investigator for the children's trial — meaning the man who ran the trial did not recall that safety monitoring lasted only 5 days. Siri interprets this as evidence that safety was not even given minimal attention.
Who is Stanley Plotkin and why is he called the godfather of vaccines?
Stanley Plotkin is the world's most influential vaccinologist — inventor of the rubella vaccine, author of approximately 900 peer-reviewed publications, and creator of Plotkin's Vaccines (the field's definitive textbook, called "the bible for vaccinologists" by Bill Gates). He attended virtually every CDC ACIP meeting for six decades, has the ACIP gavel named after him, and trained the current generation of leading vaccinologists including Paul Offit, Tina Tan, Kathryn Edwards, and Gregory Poland.
How much money has Stanley Plotkin received from pharmaceutical companies?
Plotkin consulted for Merck, Pfizer, Sanofi, and GSK for decades. He testified there was likely no year since 1990 without Sanofi payment. He received an undisclosed portion of over $182 million in royalties from rubella, RotaTeq, and rabies vaccine sales. He sat on corporate boards of major vaccine manufacturers and anticipated ongoing future payments from Merck, GSK, and Pfizer. Under oath, he stated these financial ties were "not relevant" to his opinion.
What did Plotkin admit about vaccine safety testing in his deposition?
Plotkin confirmed Recombivax HB was licensed with 5-day safety monitoring in 147 children with no control group — despite being the principal investigator on that trial. He acknowledged 5 days is insufficient to detect autoimmune or neurological disorders. He admitted he would "absolutely" tell parents DTaP doesn't cause autism without scientific proof. He admitted IOM's "insufficient evidence" finding is "different than saying it doesn't cause it."
Did Stanley Plotkin know the safety details of the vaccine trial he led?
No. When Aaron Siri revealed the 5-day safety window for Recombivax HB during the 2018 deposition, Plotkin did not know this detail despite being listed as the principal investigator for the children's trial. FDA documentation confirmed his role. Siri interprets this as evidence that safety was not given even minimal attention by the man who ran the trial. When subpoenaed for proof of extended safety data, Plotkin moved to quash and provided nothing.
How did Plotkin shape the field of vaccinology?
Plotkin shaped vaccinology across every channel: authorship of ~900 publications, editorship of major journals including Vaccine, his definitive textbook, lectures, decades of ACIP attendance and working groups, and vaccine development. His proteges — Paul Offit, Tina Tan, Kathryn Edwards, Gregory Poland — now occupy senior vaccinology posts at major institutions. Aaron Siri argues Plotkin created a "pharma selection" system where only industry-aligned researchers rise to influence.
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