Overview
- Germany’s Robert Koch Institute reports no scientific evidence that vaccines cause cancer after billions of doses, and oncology societies do not recognize the term “Turbokrebs.”
- The South Korean Biomarker Research paper found statistical associations but not causation, and the journal added a warning in late 2025 about methodological flaws and potential detection bias.
- Immunologist Carsten Watzl notes that vaccinated groups tend to be older and sicker, leading to more diagnoses being found rather than caused, and points to a French study that found no rise in cancer mortality among the vaccinated.
- A 2024 Cureus analysis from Japan was explicitly descriptive, lacked individual vaccination status and control groups, and critics say alternative explanations for mortality patterns were not ruled out.
- Claims that Japan declared a national emergency over vaccine-related “Turbokrebs” are false, and fact-checkers trace the rumor’s spread to social media posts and outlets known for misinformation.