Overview
- Whole-cell Pertussis & Brain Damage: No causal link exists; earlier associations were actually coincidental onsets of inherited conditions like Dravet syndrome.
- Measles/MMR & Autism: Extensive studies show no connection; the original claim was based on a fraudulent study designed for financial gain.
- Measles Vaccine & Encephalitis: While the natural virus causes encephalitis, the vaccine-associated risk is extremely rare and remains at natural background levels.
- Hepatitis B & Multiple Sclerosis: Large-scale research confirms there is no increased risk of developing MS following this vaccination.
- MMR & Crohn’s Disease: High-quality evidence demonstrates no association between the vaccine and inflammatory bowel diseases.
- Polio & Infertility: There is no biological mechanism or epidemiological evidence to suggest that polio vaccines affect fertility.
- COVID-19 & Infertility: Data shows fertility and pregnancy outcomes are similar between vaccinated and unvaccinated individuals.
