Rare: In the USA Guillain-Barre syndrome (GBS) occurs in about 1 to 2 per 100, 000 regardless of immunization status. GBS can be triggered by viral & bacterial infections. Modern influenza vaccine is thought to increase the incidence of GBS by 1 in a million, or less. Remember that between 3,000 to 49,000 people die each year from influenza. The risk is much less for vaccine than influenza disease.
Answered 1/31/2015
6.1k views
Gbs: Is not affected by the flu shot, I am not sure of the prevalence.
Answered 9/12/2013
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