The question remains how XMRV gets into the vaccine. Shouldn't vaccines be produced in absolute sterile environments?
This is a post from illsince1977 on another thread here. I hope they do not mind me reposting it. I thought illsince1977 gave a really good discription on how the whole vaccine contamination could have happened.
Originally Posted by Mya Symons
"I found this here:
http://www.vetmed.ucdavis.edu/Animal...s/vaccines.htm
Quality Control
In vaccine production, mice are used most extensively for quality control. Vaccine formulations include constituents such as living tissues, viruses and bacteria. Thus, since all vaccine batches are not the same, their content and effects must be tested regularly at selected stages of production to monitor safety, as required by federal regulations."
Did you find this part interesting/ironic because they use mice to test for bad outcomes as the result of the vaccines, and the mice would never get XMRV because lab mice lack the XPR1 receptor necessary to express XMRV? That's what struck me when I read about quality control.
From (transcription and any mistakes are mine. Yes it was full of run-on sentences!)
YouTube - CROI 2010: Dr Goff on XMRV
It was really discovered in a kind of funny way, because mice that we work with don’t have the appropriate receptor for this virus, so they aren’t actually capable of sustaining an infection. So the only source of this virus is this integrative copy that’s been in the genome for a very long time.
And the way it was discovered was in the 70s when people started passing human cell lines through mice, human cells have the receptor – most mammals do – and when the human cells were passed through the mice and then recovered out of the mice, they almost invariably acquired this virus. The mice had low levels, they passed it to the human cells – the human cells were very able to be infected. And so when human cells were studied after they’d been through a mouse, lo and behold! They had this very interesting virus which people assumed was a human virus in the early days, but were misled – it was a mouse virus. And people have studied it at a low level, basically since the 70s, not worrying very much about it at the time, but …
and
From
Retroviruses - Google Books
RetrovirusesBy John M. Coffin, Harold E. Varmus, 1999, p.77
Although xenotropic viruses will not infect cells of inbred strains of mice, they will infect cells derived from some wild mice and species of mice other than M. Musculus (Hartley and Rowe 1975; Lander and Chadopadhyay 1984).
Science can be very arrogant about controlling for all those pesky variables!
Then it turns out there was one sneaky little variable they just never thought to control for that is really controlling their experiments.
George even said the same above in a kind of round about way:
Little's innovation was the "inbred strain." ... Before inbred strains, scientists couldn't say for certain whether their results were because of the genetic quirks of a particular mouse or the experiments.
Just don't you dare bring the possibility of vaccine contamination into the discussion with them because they'll think you're one of those National Enquirer devouring, Area 51, crop circle, alien kidnapping wild theorists!
If you challenge the theoretical underpinnings of their research there must be something wrong with you! Only other scientists possess the credentials to question them, and then only when granted permission.
Maybe I'm just being a little cynical today, sorry!
Doees anyone else see the same possibility here?
-Susan
HERE is the link to Susan's (illsince1977's) post on the original thread "new twiv on xmrv"
http://www.forums.aboutmecfs.org/showthread.php?7530-New-twiv-on-xmrv&p=125926#post125926