因此，1976年的猪流感病毒和早期的人类H1N1病毒是近亲。
The 1976 swine flu strain and early human H1N1 strains are therefore very close siblings.
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猪流感病毒的变异之一HINI通常和猪有关。
The H1N1 strain of swine flu is usually associated with pigs.
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