Multiple choice general knowledge

Which virus causes swine flu

  1. H1N1

  2. dsDNA

  3. ssH1

  4. H1S1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

H1N1 is the influenza virus strain that caused the 2009 swine flu pandemic. It's a subtype of Influenza A virus that contains genes from swine, avian, and human influenza viruses. The other options are incorrect: dsDNA describes a double-stranded DNA structure (not a virus), while ssH1 and H1S1 are not valid virus designations.

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