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On Oct. 1, 2024, the FDA began implementing a reorganization impacting many parts of the agency. We are in the process of updating FDA.gov content to reflect these changes.

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  2. Vaccines, Blood & Biologics
  3. Guidance, Compliance & Regulatory Information (Biologics)
  4. Compliance Actions (Biologics)
  5. Enforcement Actions (CBER)
  6. Untitled Letters (CBER)
  1. Enforcement Actions (CBER)

An Untitled Letter is an initial correspondence with regulated industry that cites violations that do not meet the threshold of regulatory significance for a Warning Letter. Examples when CBER has issued an Untitled Letter include after its review of a manufacturer's advertising and promotional labeling, after an inspection under CBER's bioresearch monitoring program or by Team Biologics, and as a result of internet website surveillance.


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