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Home Q & A Board Biology-Related Homework Help Medicine Immunology
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Leahh3749 Leahh3749
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6 years ago
_____ cause(s) mild and limited disease, whereas _____ cause(s) more severe disease and higher mortality.
 
  a. Antigenic drift; antigenic shift
  b. Antigenic shift; antigenic drift
  c. Epidemics; pandemics
  d. Pandemics; epidemics.
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nena1107nena1107
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6 years ago
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Leahh3749 Author
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6 years ago
this is exactly what I needed
Tim0301
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Yesterday
Thank you, thank you, thank you!
annielin111
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2 hours ago
Thanks
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