Nobody!
Thalidomide was NOT a vaccine, but a drug supposed to counteract nausea of pregnancy. Not only was it never a vaccine, it was never claimed to have been one, and, like all other new drugs, had associated risks of unknown side effects. There is absolutely no comparison. Not in composition, not in biological pathways, not in action. The basic flu vaccine has been used for decades, and every single year is modified to include the new strains of the virus. Swine flu is just another of those strains, even if more virulent and more dangerous.
EDITED