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How long can H5N1 survive by Temperature?

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Albert View Drop Down
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    Posted: February 12 2008 at 5:36am
 
The Virus can survive in raw contaminated pork or faeces for at least 35 days at low temperatures as low as 4oC. 
 
It can survive for 6 days at temperatures of 37oC (98 degrees) in the summertime.  The virus is fairly robust.
 
In order to kill the virus by cooking, the temperature must reach 70oC.
 
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Albert Quote  Post ReplyReply Direct Link To This Post Posted: February 12 2008 at 5:53am
 
 

Environmental survival

Heat kills H5N1:
  • Over 30 days at 0ºC ( 32o F) (over one month at freezing temperature)
  • 6 days at 37ºC ( 98.6o F) (one week at human body temperature)
  • 30 minutes 60ºC (140.oF) (half hour at a tempertature that causes second and third degree burns in humans in five seconds)
Influenza A viruses can survive for over 30 days at 0 oC (32.0 oF). H5N1 can survive in the environment for 6 days at 37 oC (98.6 oF). Inactivation of the virus occurs under the following conditions:
  • Temperatures of 56 oC (132.8 oF) for 3 hours or 60 oC (140 oF) or more for 30 minutes (running a high fever helps kill avian flu viruses)
  • Acidic pH conditions
  • Presence of oxidizing agents such as sodium dodecyl sulfate, lipid solvents, and B-propiolactone
  • Exposure to disinfectants: formalin, iodine compounds
 
 
 
 
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Sudh View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sudh Quote  Post ReplyReply Direct Link To This Post Posted: January 30 2009 at 11:41pm
Until now, the spread of the virus from one person to anoter has been very rare and it is thought that it cannot spread beyond one person. However, some scientists are concerned that in the future the H5NI virus could easily spread from on person to another due to the fact that all types of influenza viruses are known for the increased ability to mutate. If this happens, the consequences will be horrifying as the H5NI virus is foreign to humans and our bodies cannot begin to offer us a reliable immune protection against it.

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