It is the deadly "Spanish flu"

Getting at the truth, 26 Apr 2009
They call it “swine flu,” but it is the exact same virus as the “Spanish flu,” the influenza A virus strain of subtype H1N1, or A/H1N1, which killed 50 million.
This is the exact same virus which caused the influenza epidemic that swept the world in 1918 killed an estimated 50 million people. One fifth of the world’s population was attacked by this deadly virus. Within months, it had killed more people than any other illness in recorded history.
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