On its website, the NAA doesn't make a definitive statement about vaccinations and autism, instead directing users to the National Vaccine Information Center, a nonprofit organization.
Not definitive, just definite.
Vaccination of the definitive hosts is an effective method.
The Community-Acquired Pneumonia Immunization Trial in Adults (CAPiTA) trial should provide more definitive data on the role of adult PCV13 vaccination in preventing vaccine-serotype-specific pneumococcal community-acquired pneumonia (CAP).
The authors concluded that pneumococcal vaccination significantly reduced the risk of definitive (or bacteraemic) pneumococcal pneumonia, but only in low-risk populations, i.e., those younger than 55 years old and without chronic medical or immunosuppressing conditions.
Definitive conclusions depend on trials directly comparing the various vaccination approaches.
The definitive claim comes after many anti-vaxxers have linked vaccinations with autism in recent years.
Finally, while encouraging, definitive conclusions regarding the immune restorative impact of HER2-directed DC1 vaccination in high-risk non-pCR patients, cannot be drawn until completion and final reporting of this ongoing trial.
The World Health Organization's Global Advisory Committee on Vaccine Safety could not ascertain a causal relationship of CRPS to HPV vaccination given lack of sufficient case information and inability to reach a definitive diagnosis in many cases (Global Advisory Committee on Vaccine Safety, 2013).
Dr Phillips and her team hope to get a definitive answer by studying at least 300 elderly patients attending for their routine flu vaccinations this winter and next.
