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German study finds xmrv

Discussion in 'XMRV Research and Replication Studies' started by bel canto, May 18, 2010.

  1. bel canto

    bel canto Senior Member

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    interesting that it's posted on the CDC website so quickly
     
  2. leaves

    leaves Senior Member

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    If it is really that infectuous than thus must imply that most people can resist infection. Think about it. If you infect 4% with a virus transmissible through air than in no time everyone will have it. But we don't see this. So I don't like this news because it suggests that we as cfs ers have some special characteristics that make us vulnerable for infection.
     
  3. bel canto

    bel canto Senior Member

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    the suggestion in the paper is that immunocompromised patients may be susceptible - but that raises the question of what causes the immunosuppresion to begin with, as most of us were healthy at some point
     
  4. subtr4ct

    subtr4ct Senior Member

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    Maybe genetic susceptibility + current respiratory infection (e.g. flu) + exposure?
     
  5. Robin

    Robin Guest

    They look at patterns of transmission, I think. For example, HIV is present in saliva, semen and vaginal fluids but it's not transmissible through contact with these fluids or droplets unless there is some type of blood contact (open sore in mouth during oral sex, for example.) If you could get HIV through kissing it would be much more prevalent like EBV which has a prevalence as high as 95%. Respiratory viruses that are spread through coughing or sneezing like measles would have a much higher infection rate than 1-4% estimated for XMRV. Here's an interesting case study of a single case of measles spreading through a community. 32/50 unvaccinated people contracted it within six weeks of initial exposure (there were 2 vaccine failures) -- that's a transmission rate of 64%.

    So, right off the bat I suspect that they will rule out transmission from saliva and sputum.

    ETA: oops, leaves made my point while I was still typing. ;)
     
  6. bel canto

    bel canto Senior Member

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    the significant different (3% vs. 10%) rates seen in immunocomp. patients vs. those who were sick with RTI, but not immunocomp. does seem to suggest they are more susceptible - so the at least some of the nons are resisting infection
     
  7. bel canto

    bel canto Senior Member

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    I wonder if you can make the leap to think that 10% (or more) of the public has been exposed?
     
  8. Jenny

    Jenny Senior Member

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    The immunosuppressed group in this study had had organ or bone marrow transplants, so were presumably on immuno-suppressant drugs. This might be quite different from other ways in which the immune system might be compromised.

    I've been wondering about whether I could infect my husband as he had a liver transplant 2 years ago, is on immunosuppressant drugs, and has Hep C. But he's fighting fit, as is everyone else I've had intimate contact with since I've been ill as far as I know.

    Jenny
     
  9. leaves

    leaves Senior Member

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  10. Koan

    Koan Be the change.

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    I know!

    :eek:

    What do you suppose that means?!

    I must say that this new research adds dimension to what we already knew in very useful and interesting ways.

    Fascinating!
     
  11. bel canto

    bel canto Senior Member

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    a big leap would be to then wonder if a 10% exposure, but 3% infected would suggest a 30% rate of infection when exposed. Of course if the immunocompromised still can have resistance to infection, then the exposure rate could be much high
     
  12. subtr4ct

    subtr4ct Senior Member

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    THe group (#3) that showed an XMRV infection rate greater than an assumed baseline of 3-4% was not a typical bunch of people: "From group 3, a total of 161 BAL and tracheal secretion samples were collected from patients with severe RTI and immunosuppression as a result of solid organ or bone marrow transplantation". Transplants seem like they would likely transmit XMRV. Also, I'm going to guess that people who had transplant are also more likely to have received blood transfusions along the way.
     
  13. leaves

    leaves Senior Member

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    Hh Anyone fancies updating Wikipedia ;) ??
     
  14. CBS

    CBS Senior Member

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    Journal of Emerging Infectious Diseases

    This was on the CDC's web-page because the Journal Emerging Infectious Diseases is a CDC journal.

    This article will be printed in the "Expedited" section on the June issue: http://www.cdc.gov/ncidod/EID/index.htm
     
  15. bel canto

    bel canto Senior Member

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    and the infection rate lower
     
  16. Koan

    Koan Be the change.

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    Yeah! But, even if XMRV is an opportunist, it could still be a huge diagnostic marker, a target for treatment and a window into the workings of ME/CFS.

    Very exciting!
     
  17. dannybex

    dannybex Senior Member

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    It might not be transmissible by air -- it could be easily killed by oxygen.

    ???
     
  18. Impish

    Impish Senior Member

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    They specifically say that they followed the methods outlined in earlier papers (1,12) when using PCR to find XMRV. I don't remember seeing anything like that in the studies that couldn't find XMRV. I am too busy to go look at those papers to see if their methods are similar to those published by WPI
     
  19. leaves

    leaves Senior Member

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    :) you are right, but im just fed up with all these opportunists!! I want THE real thing..,
     
  20. bel canto

    bel canto Senior Member

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    leaves - in this study, it appear immunodepression was first, as these are transplant patients, etc.
     

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