EXPLAINERFeatures|HealthDid a South Korean study really claim that COVID-19 vaccines cause cancer?No it did not, but social media ‘influencers’ misused its results to spread misinformation far and wide.
## Study Misinterpretation: COVID-19 Vaccines and Cancer Risk
Study Misinterpretation: COVID-19 Vaccines and Cancer Risk
Recent claims have suggested a causal link between COVID-19 vaccinations and an increased risk of various cancers, based on a study conducted by South Korean researchers. These assertions, however, have been widely misrepresented, leading to misinformation.
The study in question, titled “1-year risks of cancers associated with COVID-19 vaccination: a large population-based cohort study in South Korea,” was published in the open-access academic journal, Biomarker Research. It utilized data from the South Korean health insurance database to explore any potential correlation between COVID-19 vaccination and cancer diagnoses within one year. The study identified a statistical pattern but did not establish a causal relationship.
Social media platforms and various individuals have misrepresented the study, suggesting that it provides definitive proof of increased cancer risks post-vaccination. Notably, the assertion was made that there was a 27% overall increase in cancer risk, with higher percentages for specific cancers. These figures were promulgated without scientific backing and failed to consider the study's limitations.
These assertions, however, have been widely misrepresented, leading to misinformation.
The researchers of the study explicitly stated that their findings indicated an "epidemiological association without causal relationship." This means that while there was a statistical correlation observed, it does not imply that COVID-19 vaccines cause cancer. The observed correlation may be attributed to factors such as increased medical surveillance among vaccinated individuals, leading to earlier cancer diagnoses.
Global health authorities and scientific communities maintain that there is no evidence linking COVID-19 vaccines to cancer. The British Medical Journal (BMJ) and the Global Vaccine Data Network have confirmed that mRNA vaccines, which do not enter the cell nucleus or include live viruses, cannot cause cancer. Additionally, institutions such as Fox Chase Cancer Center and Blood Cancer UK have validated the safety of mRNA vaccines, even for patients undergoing cancer treatment.
The claims linking COVID-19 vaccines to an increased risk of cancer are unfounded and contradict current scientific evidence. The National Cancer Institute in the United States has stated unequivocally that COVID-19 vaccines do not cause cancer or contribute to its recurrence or progression.
Based on reporting by Al Jazeera.