Researchers will present a systematic review of scientific evidence for, and against causal associations for 47 proposed adverse events following immunizations at PAS 2019. The review found that, for 12 of the 47 AEFIs in the study, a causal relationship has been established with at least one vaccine. With the exception of deltoid bursitis, where a vaccine is administered incorrectly, causing pain to the arm, the adverse reactions are very rare. For the other 35 AEFis, the evidence does not support a causal relationship between conditions, such as ASD, asthma, diabetes, multiple sclerosis or SIDs, and vaccinations.
A new study looks at the possible causal link between the herpes virus and Alzheimer's disease. Researchers report antiviral drugs significantly reduce the risk of developing dementia in patients with severe herpes infections.
Researchers at Aarhus University have identified a mutation in an immune system sensor that can result in chicken pox infection becoming fatal. According to the study, immune cells in those with extreme reaction to VZV neither detected the virus nor activated the immune system. The findings shed light on why some people are more susceptible to infections than others.