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Researcher Dies After Studying Plague Bacteria

Malcolm J. Casadaban, a molecular genetics professor at the University of Chicago, died last Sunday, seemingly from an infection of a weakened form of Yersinia pestis, the bacteria that causes the plague. "Because this form of the bacteria is not known to cause problems in healthy people, special safety procedures are not required to handle it, said Dr. Kenneth Alexander, a virologist and chief of pediatric infections at the U. of C. Medical Center. Lab researchers who work with the bacteria would typically wear gloves, a lab coat and protective goggles, and the bacteria would be disposed of in a biohazard bag and heated for about two hours, Alexander said. Two key questions in Casadaban's death will be whether there was anything different about the strain of bacteria he was handling and whether Casadaban had any underlying conditions that may have made him more susceptible to infection."

27 of 143 comments (clear)

  1. We're screwed by Anonymous Coward · · Score: 3, Funny

    Man, we're so screwed now. This is like a movie. Who knows who he had contact with? It probably morphed in some way and now it's going to sweep the globe wiping out most of the population. :(

    1. Re:We're screwed by CRCulver · · Score: 3, Informative

      If I understand correctly, the plague wasn't transmitted from human to human, but rather from lice to humans. Since lice are nowhere near as prevalent as they used to be, you don't normally have to fear an outbreak.

    2. Re:We're screwed by Anonymous Coward · · Score: 5, Informative

      Fleas->Rats ->Fleas->Humans

    3. Re:We're screwed by rve · · Score: 5, Informative

      If I understand correctly, the plague wasn't transmitted from human to human, but rather from lice to humans. Since lice are nowhere near as prevalent as they used to be, you don't normally have to fear an outbreak.

      Not necessarily.

      The author makes a convincing argument that the Black Death was actually spread by droplet based transmission.

      The plague never went away. Even after the last pandemic, people still have been contracting the plague. Yersinia pestis is still endemic among rodents in Europe, Asia and the USA. Small outbreaks, with the exact same symptoms still occur today from time to time. The history of this disease is extremely well documented, and not at all controversial.

      When the infection reaches the lungs it's called Pneumonic plague, it spreads via droplets and is extremely contageous. When it infects the lymph nodes, it's called Bubonic plague. It's the same disease, just in a different organ. When the infection reaches the blood, it's called Septic Plague.

      It's not as dangerous now, because we don't commonly share our homes with rodents and lice anymore, and with prompt treatment with antibiotics, the prognosis is decent.

      Now I haven't read that book that you linked to, so I don't know what arguments they make, but a hypothesis that states that the black death was a different disease with the exact same symptoms as a very well known and documented disease that still occurs today seems needlessly complicated to me.

    4. Re:We're screwed by gyrogeerloose · · Score: 5, Interesting

      Yersinia pestis is still endemic among rodents in Europe, Asia and the USA.

      That's true. In fact, most public campgrounds here in California have signs warning of plague danger and advising people to keep their distance from ground squirrels, which are known carriers of the yersinia pestis bacterium.

      --
      This ain't rocket surgery.
    5. Re:We're screwed by PitaBred · · Score: 3, Informative

      Here in Colorado we find Prairie Dogs yearly that are plague carriers

  2. third key question by s4m7 · · Score: 4, Funny

    when he rises from the dead, will he spread the contagion through his bite, and will cutting off his head finally kill him?

    --
    This comment is fully compliant with RFC 527.
    1. Re:third key question by NotQuiteReal · · Score: 3, Funny

      That's why we embalm or cremate folks now. That whole rising from the dead thing causes nothing but problems, however it manifests itself.

      --
      This issue is a bit more complicated than you think.
    2. Re:third key question by X-Power · · Score: 4, Funny

      How does embalming stop the dead from rising? By fooling people with their good looks?

    3. Re:third key question by Anonymous Coward · · Score: 3, Funny

      That's why we embalm or cremate folks now. That whole rising from the dead thing causes nothing but problems, however it manifests itself.

      Just make sure to not embalm people with Worcestershire sauce.

    4. Re:third key question by Kjella · · Score: 3, Funny

      That's why we embalm or cremate folks now. That whole rising from the dead thing causes nothing but problems

      Clearly someone has not seen the Mummy etc.

      --
      Live today, because you never know what tomorrow brings
    5. Re:third key question by Runaway1956 · · Score: 3, Informative

      *sigh*

      Silly boy. We want to make sure some poor bastard isn't buried alive, so we drain ALL of his blood!! Even vampires don't walk again once we've flushed their radiators with Drano!!

      --
      "Windows is like the faint smell of piss in a subway: it's there, and there's nothing you can do about it." - Charlie Br
    6. Re:third key question by s4m7 · · Score: 3, Funny

      Seemed to turn out pretty well for that Jesus dude.

      Bah. Three days to respawn? He must've done some serious TKing or something.

      --
      This comment is fully compliant with RFC 527.
    7. Re:third key question by Eudial · · Score: 4, Funny

      Since he was walking on clipped tiles and handing out more objects than could possibly fit in his inventory, there was justified suspicion of some form of cheating. I think the server has been patched now, though, since that doesn't seem to happen as often.

      --
      GAAH! MY PRINTER IS ON FIRE!!! PUT IT OUT! PUT IT OUT!
  3. A brief rememberence of Prof. Casadaban by Anonymous Coward · · Score: 5, Interesting

    I took a lab class from him on genetic engineering in the late 90s. Though he was a little eccentric at times, and spoke with an incredibly soft voice, I remember him as a professor who would spend countless hours with the undergraduate students, teaching them to learn the basics of molecular biology - the U of C will be worse off without this devotion, without him. He even wrote me a recommendation letter for graduate school, but I've lost touch with him since then, now, to my infinite regret. May he rest in piece.

    1. Re:A brief rememberence of Prof. Casadaban by baKanale · · Score: 4, Funny

      Ultimately we ALL will rest in piece.

      Unless you get hit by a grenade. Then it's pieces.

    2. Re:A brief rememberence of Prof. Casadaban by Abstrackt · · Score: 4, Insightful

      Ultimately we ALL will rest in piece.

      Unless you get hit by a grenade. Then it's pieces.

      I imagine it depends on whether the person throwing the grenade pulled the pin first, otherwise you'd just have a nasty bruise. ;)

      --
      They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance. - Terry Pratchett
    3. Re:A brief rememberence of Prof. Casadaban by rhyder128k · · Score: 4, Funny

      With a dry cool wit like that, you could be an action hero.

      --
      Michael Reed, freelance tech writer.
  4. Oh good by Anonymous Coward · · Score: 3, Funny

    Now my outfits will finally come back in style, and I can get all the chicks instead of lots of stares and police harassment.

  5. Cause of Death? by Anonymous Coward · · Score: 5, Interesting

    "An initial autopsy showed that Casadaban "showed no obvious cause of death"", the report goes on to state that the found the bacteria in his bloodstream.
     
      What was his white cell count? Were cytokines present in his bloodstream? Was his lymphatic system showing signs of duress (engorged, trapped glands; cell death)?
     
    I'm also a bit wary of the fact that the report was released from the University Medical Center where the man worked, not the local Medical Examiner's office. I'd love to see a second conclusion, and not have to fear that the University is doing this as a publicity stunt for their research programme.
     
    Going to be a real embarassment if we find out he died of a cheeseburger, or embollism, or insulin-related shock.
     
    If I get out of my car and promptly drop dead, you're not going to say that driving my car was the cause of death.

    1. Re:Cause of Death? by antifoidulus · · Score: 5, Funny

      If I get out of my car and promptly drop dead, you're not going to say that driving my car was the cause of death.

      Guess it all depends on who you cut off...

  6. movie plot by confused+one · · Score: 3, Insightful

    Isn't this where the plot for about a dozen movies kicks in?

  7. Re:The safety measures are wholly inadequate. by BungaDunga · · Score: 3, Insightful

    Because we don't know who ELSE has stocks of the disease and might want to turn it into a weapon. Plus the more we learn about infectious disease in general the better we can fight it. Anyway how does that link have anything to do with it? The more they vaccinate people, the less likely smallpox will come back. Manufacturing vaccines has NOTHING to do with having live, viable stocks of the actual disease. Which do exist, but that's a totally different issue.

  8. Re:The safety measures are wholly inadequate. by rve · · Score: 4, Insightful

    You would think plagues and other horrible diseases should be eradicated not preserved to experiment with later. Take small pox it was supposed to be eradicated but they just won't let it die . But curing diseases would be a bad business model and lead to their eventual unemployment.

    Smallpox was a virus that could only infect humans. With most humans immunized, it has nowhere else to go and it disappeared. Yersinia pestis can't be eradicated. It's a bacterium that is endemic among rodents. You would have to exterminate rodents from the wild in most of Eurasia and North America and still not completely eradicate it.

  9. My building by hyperion2010 · · Score: 5, Interesting

    So I work in the same building as this lab, use the same elevators, touch the same door handles etc. I'm not too worried, but plenty of people are and have been since they started working with your *more dangerous than ecoli* varieties. What really pissed me off is that if I had not heard about this from a PI down the hall yeasterday I would have found out about this through /. I can understand why the UoC doesnt send out alerts like this via email to everyone, but some people do need to know. The PI down the hall basically said "shit shit, god damn it, shit, the cdc will be here to deal with and who knows if we'll be allowed to stay," probably a slight over-reaction, but as my mother the md mph said "this is one of those NEVER things." Anyway, I was very sorry to hear about this, also as TFA says, we really dont know if this was a opportunistic infection that was able to get in because he was already sick or what.

  10. Jumping the Gun by drbuzz0 · · Score: 4, Insightful

    This is newsworthy if he actually died from this strain which we had thought was not dangerous. Considering that it has been used as a vaccine and plenty of others have been exposed without any ill effects, it seems like concluding that the plague bacteria is what killed him is very premature. There's no direct evidence that this is the cause of death - there is no cause of death as of yet.

    The autopsy showed "showed no obvious cause of death" except for the presence of the weakened strain of the plague bacteria Yersinia pestis in his blood, the U. of C. Medical Center said in a statement."

    That is far from conclusive, especially given that there aren't any reports that he developed the symptoms of the infection before dying. Chances are we'll get some more conclusive information as they continue to review the case and the data from the autopsy along with tissue samples and toxicology tests. However, there is the possibility that the cause of death will not be known. There are a number of deaths each year in otherwise healthy people which can't be conclusively proven to be caused by a single cause.

  11. Similar to the story of Karen Wetterhahn by JoshuaZ · · Score: 3, Interesting

    Wetterhahn was a chemist who was working with dimethylmercury which people did not realize was nearly as dangerous as it was. She died of mercury poisoning despite following all the standard safety requirements. http://en.wikipedia.org/wiki/Karen_Wetterhahn Sometimes we just don't know enough.