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Colorado manís fatal West Nile infection likely came from blood transfusion ^ | August 8, 2013 | Matt Farley

Posted on 08/08/2013 12:58:09 PM PDT by neverdem

DENVER — A Colorado man who died of West Nile virus last year was likely infected through a blood transfusion, a report from the Centers for Disease Control and Prevention found.

The man, who was undergoing treatment for non-Hodgkin’s lymphoma, began developing West Nile symptoms after 29 days in the hospital, sharply narrowing the number of ways he could have been exposed to the virus, according to the CDC’s Morbidity and Mortality Weekly Report. He died after 47 days in the hospital.

Eighteen days prior to showing symptoms, the patient received a blood transfusion that health officials now believe contained West Nile.

Since 2003, blood donations have been routinely screened for West Nile virus, with 3,500 contaminated samples having been destroyed since then, the CDC reported. This appears to be the first case of West Nile infection in which a blood donation initially tested negative before going on to infect someone.

The FDA recommends that blood collection agencies use one methodology – “mini-pool” nucleic acid testing – when screening for West Nile, then switch to a more sensitive process – individual donation nucleic acid testing – during periods of high West Nile activity, the CDC report says.

It appears that in the Colorado case, the agency had no extraordinary reason to believe the sample might contain the virus, and so was using the less-sensitive method, according to the report.

The cancer patient’s weakened immune system likely was another factor that contributed to his infection, according to the report.

Most people infected with West Nile show no symptoms at all, so it’s very difficult to screen infected donors before they give blood. The laboratories involved in screening the blood for the victim have since adopted a new policy to discard all blood samples that test positive for West Nile during pooled screening if a specific infected individual sample cannot be found, the CDC said.

The CDC did not name the patient, nor the hospital where he received treatment.

TOPICS: Health/Medicine
KEYWORDS: blood; bloodtesting; bloodtransfusion; microbiology; virology; westnile; westnilevirus
Rare West Nile death sparks blood transfusion concerns

The pooled screening test was positive for West Nile virus, but when they tested the individual samples, not one was positive. Damn that false negative.

1 posted on 08/08/2013 12:58:10 PM PDT by neverdem
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To: neverdem

Just wait till the leftist bastards sneak in gay blood donation without telling anyone. Two years later normal people will wake up and realize what happened.

2 posted on 08/08/2013 1:38:20 PM PDT by I want the USA back (Liberalism is contrary to human nature. Promoting liberalism comes from a strong hatred of self.)
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To: I want the USA back
Just wait till the leftist bastards sneak in gay blood donation without telling anyone.

82 lawmakers ask for end to ban on gay men donating blood

Mike Enzi was the lone pubbie.

3 posted on 08/08/2013 3:17:34 PM PDT by neverdem (Register pressure cookers! /s)
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To: I want the USA back

How else would they get free HIV testing? It’s simply a donor history question standing between you and them. I am sure most are honest and decline to donate. However, I am absolutely certain this is used as a free HIV test. I was hoping NAT would have fewer false negs, but even one false neg has deadly consequences. Aren’t we glad we are opening the immigration flood gates to expose more sick Americans to endemic pathogens to every region in the world.

4 posted on 08/15/2013 3:24:02 AM PDT by momincombatboots (Back to West by G-d Virginia.)
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