The analysis was released as part of the CDC's Morbidity and Mortality Weekly Report. The report reviewed the rate of people who contracted GBS after receiving the vaccination, beyond the general rate of the illness in the overall population. With the common seasonal flu vaccination, about one extra person in a million vaccinated contracted the disease. Regarding the swine flu, 0.8 more cases were found.
The CDC said that ongoing analysis of other potential side effects has revealed the swine flu vaccine, also called H1N1, has so far proved safe.