On a pinhead


I’ve been reading a biology text book (c. 1987) that we own.  These sentences struck me:

“A virus is a genome enclosed in a protective coat.  The tiniest viruses are only 20 nm in diameter–smaller than a ribosome.  Millions could easily fit on a pinhead.  Even the largest viruses can barely be resolved with the light microscope. 

A chart tries to illustrate nanometers.  An atom is .01 nm; small molecules might be 1 nms; lipids, then proteins, up to 10 nms; ribosomes are a bit bigger and then we have the small viruses.  HCV viruses are different sizes–some are 50 nms, some a bit bigger.  They can only been seen with an electron microscope.

The CDC writes:

How long does the Hepatitis C virus survive outside the body?

The Hepatitis C virus can survive outside the body at room temperature, on environmental surfaces, for at least 16 hours but no longer than 4 days.

How should blood spills be cleaned from surfaces to make sure that Hepatitis C virus is gone?”

Any blood spills — including dried blood, which can still be infectious — should be cleaned using a dilution of one part household bleach to 10 parts water. Gloves should be worn when cleaning up blood spills.

Our blood is the chemical soup that transports these zombies.  Since HCV can survive on surfaces for days–wet or dried up–then blood spills need be no bigger than a pinhead to house millions of them.

Media images from the Vietnam war period come to mind: outdoor village barbers with their busy clippers and razors; clunky jet-guns pressed into recruits’ bare arms at boot camp;   Vietnamese and American wounds getting dressed in the bush,  hamlets, and compounds.  Such a mixing up of blood and its then undetectable payloads of HCV.

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About Laura

NW Vermont.
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3 Responses to On a pinhead

  1. SquidlyOne's avatar SquidlyOne says:

    Any military transport, be it plane, ship, tank or hum-vee…APG, bradley…etc. etc…

    Get jostled around long enough and you will find a rough weld somewhere that someone found before you. And in combat theaters the occupation forces are in close contact with the local population. Field medical units taking on critically wounded for just a battle or two aren’t going to worry that much about sanitation, as they are too busy keeping blood in the troops. I came out of the water with my right thigh all ripped up spraying blood all over the place. The corpsman ran over with his field kit freaking out and applied a pressure bandage. He was covered in blood. I wasn’t too worried about it. I dunno, when I was younger I felt like Capt. America I guess.

    The Afghan Army is plugged up with smack. The occupation forces aren’t worried about high soldiers who turn with the tide if the elders tell them to. It was the same with ARVN I suppose. Make no mistake about it. This is truly “The Veteran’s Disease” and active duty military is the best petri-dish on earth!

  2. Randy's avatar Randy says:

    One pharma business is researching how to destroy the covering of the HCV bug and therefore make it suseptible to destruction. The race is on, especially with all of the folks in the US now being urged to get tested. Whoa nelly, NOW they worry about it? Seems to me this alarm should have been sounded years ago.

  3. asknod's avatar asknod says:

    Patricia sent me a medical article that revealed HCV was still viable three months later in a dried blood sample taken from a warm, humid environment. Let’s see. Where would you find an overabundance of HCV in the environment and warm, humid conditions in the sixties and seventies?

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