Data collection has been completed and researchers are now in the process of analyzing the data. The study includes information from 517 children who died and 1217 healthy children used as controls. Data was analyzed by comparing vaccination histories for each vaccine during the week and month prior to the date of death for each child. The results showed no association between immunizations and childhood death. A manuscript of study results has been drafted and has been submitted for publication.
Data collection is in progress.
Clinical reviews of several hundred deaths will be conducted to determine the cause of of death and if any deaths could be attributable to Hepatitis B vaccination. Researchers are using a case-control study design involving approximately 400 children with a diagnosis of ataxia and 1200 children without the disease. Data collection is complete and investigators are currently analyzing the information. When completed, the study results will be submitted for publication. A case-control study design is being used.