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PANDEMIC ALERT LEVEL
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Tracking the next pandemic: Avian Flu Talk

h5n1, h5n2, h5n3, h5n4.....
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    Posted: July 26 2006 at 9:08pm
Ok, you know how they give these names to the different influenzas?  H1N1 is now the seasonal flu, right?  Is there an H1N2 or 3 or 4?  Is there a H2N1 or and H3N1?  And if there are, are they scary?
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Points: 145 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jknoel Quote  Post ReplyReply Direct Link To This Post Posted: July 27 2006 at 10:33am

The H refers to the hemagglutinin molecules and the N refers to the neuraminidase molecules on the surface of the influenza virus.  There are currently a total of 16 H subtypes and 9 N subtypes that can combine in any combination which gives a grand total of 144 different combinations of flu that are potential.  H1N1 and H3N2 are the current seasonal flu subtypes.  H9N2, H7N7, and H7N2 have rarely infected humans but they are not nearly as lethal as H5N1 is.
The only way to grow is to take a chance.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: July 27 2006 at 11:32am
from a famous wiki,

Influenza A viruses are significant for their potential for disease and death in humans and other animals. Influenza A virus subtypes that have been confirmed in humans, in order of the number of known human pandemic deaths that they have caused, include:

  • H1N1, which caused "Spanish Flu" and currently causes seasonal human flu
  • H2N2, which caused "Asian Flu"
  • H3N2, which caused "Hong Kong Flu" and currently causes seasonal human flu
  • H5N1, the world's major current pandemic threat
  • H7N7, which has unusual zoonotic potential and killed one person
  • H1N2, which is currently endemic in humans and pigs and causes seasonal human flu
  • H9N2, which has infected three people
  • H7N2, which has infected two people
  • H7N3, which has infected two people
  • H10N7, which has infected two people
  • The possibility of H5N1 and H3N2 exchanging genes through reassortment is a major concern.
  • [not all avian flu strains can as easily exchange genes with each other, but the science involved is still being developed and is very controversial]
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billy the kid Quote  Post ReplyReply Direct Link To This Post Posted: February 25 2015 at 1:50pm
what about H5N4
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: March 11 2016 at 7:51am
H5N4... Hawaii Five-0 S5 Ep13 or you mean it?
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