Serious side effects from vaccines, such as those seen with oral polio vaccine (1 in 2.4 million doses), Pandemrix flu vaccine (1 in 55,000 doses), measles-containing vaccine (1 in 25,000 doses), yellow fever vaccine (1 in 1 million doses), and influenza vaccine (1 in 1 million doses), have historically been detected within two months of administration.

“if you look at the serious side effects that vaccines occasionally cause like polio caused by the oral polio vaccine which occurred in one in 2.4 million doses or narcolepsy a disorder of wakefulness that was caused by the squatting adjuvanted flu vaccine that was given in europe not in the united states which occurred in roughly one in fifty five thousand doses thrombocytopenia lowering the platelet count that occurs with measles containing vaccine which occurs in one in twenty five thousand doses or something called viscerotropic disease which is basically a sort of multi-system disease caused by the yellow fever vaccines basically yellow fever caused by the yellow fever vaccine which occurs in about one in a million doses or guillain-barre syndrome which is this ascending paralysis which can affect your ability to breathe that occurs in about one in a million doses of the influenza vaccine”