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Old 07-18-2005, 10:19 PM
sayhuh78 sayhuh78 is offline
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how long can a virus survive outside the body?

just a quick question
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Old 07-18-2005, 10:47 PM
Rhubarb Rhubarb is offline
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Depends on the virus. IANAV (virologist), but was told by an AIDS researcher once that HIV could survive for a relatively short time (on the order of an hour) while the herpes virus (or maybe hepatitis, it's been awhile) could survive for a day or two outside its host.

So, what virus did you have in mind?
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Old 07-18-2005, 11:37 PM
Blake Blake is offline
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What he said, depends on the virus. There have been viral distillations sitting in vials in crystalline form for several decades that are still infective. In contrast others become denatured almot immediately on removal from water.
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Old 07-18-2005, 11:42 PM
Harmonix Harmonix is offline
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Again, depends on the virus.

The rule of thumb is if the virus is enveloped(has a plasma membrane around its capsid) then it will last about a day without water. If the virus only has a capsid then it can last much much longer.

If you're wondering what the evolutionary advantage of an envelope is, I believe it is because it can penetrate a cell much easier.
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Old 07-18-2005, 11:51 PM
sayhuh78 sayhuh78 is offline
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i cut my finger at work today, dont think i got any viruses, but i was just wonderin how dangerous that napkin i was usin was and also if its safe to be pickin up trash for a livin HA
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Old 07-19-2005, 12:11 AM
Harmonix Harmonix is offline
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not very unless someone spilled their blood on it earlier.

People who pick up trash wear gloves!
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Old 07-19-2005, 07:40 AM
St. Urho St. Urho is offline
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Hepatitis B can survive outside the body for more than a week. That's the longest I've heard of.

From the CDC
Quote:
How long can HBV survive outside the body?
HBV can survive outside the body at least 7 days and still be capable of causing infection.
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Old 07-19-2005, 10:42 AM
Wile E Wile E is offline
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The canine parvovirus is extremely hardy and can continue to be infective for about 6 or 7 months in the environment. Even freezing temperatures won't kill it.
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Old 07-19-2005, 10:57 AM
Bosda Di'Chi of Tricor Bosda Di'Chi of Tricor is offline
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How about smallpox?
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Old 07-19-2005, 11:26 AM
vetbridge vetbridge is offline
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Quote:
Originally Posted by Wile E
The canine parvovirus is extremely hardy and can continue to be infective for about 6 or 7 months in the environment. Even freezing temperatures won't kill it.
Agree. That time line stretches even longer if there is significant organic material present. Feline leukemia virus OTOH dies as soon as any moisture around it dries. The rhabdovirus that causes rabies has been recovered alive from deep below packed snow, it loves cold environs.
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