In the past, not as many cases as we expect now have been recorded.

So, then, why the hysteria? The "Swine Flu" is nothing more than a mere variation on all the other flus that we have seen.
Other undesirable ingredients in the flu vaccine that we don't hear much about are Triton X-100 (a detergent); Polysorbate 80 (a potential carcinogen); formaldehyde (a known carcinogen); Aluminum (linked to Alzheimer's disease).