My husband was pressured into a flu shot October 12, 2012, and he was stumbling and slurring by December 2012. Our ALS doctor has said the vaccine triggered this awful disease. After the vaccine he noticed left hand weakness and when he tried to catch up to a coworker he noticed his fast walk was not fluid. Look up the ingredients adjutants that makes the immune system react to a vaccine. This is just 1 trigger that can cause ALS that researchers are looking into.