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Tuberculosis: TB or Not TB

gas mask Nicole Kidman is amazing in The Hours, the role that earned her an Academy Award. From the haunting music of Philip Glass to the fake nose on Kidman, Hours provides a powerful look into the day of a life. I find it ironic that in the movie Meryl Streep (the best actress ever–in my humble opinion) plays a character who sees a movie star outside the flower shop, because in the book, the movie star is Meryl Streep. “Meryl, Meryl, Meryl, Meryl, Life is but a dream.”

I love Nicole Kidman, and think she’s a wonderful actress. However, she should know not to smoke. In Moulin Rouge, her character died of TB. Didn’t all the hacking and coughing up blood put her in fear of lung disease?

Andrew Speaker has been in the news since May 31 because of his MDR-TB (multi-drug resistant tuberculosis). Talk about irony: Speaker is the Atlanta-based personal-injury lawyer who might have infected co-passengers on the airplane flights. Ouch! But as of early June, I still don’t have all the medical facts to understand what’s going on.

First of all, let’s define tuberculosis (TB). It’s a bacteria that has been around for centuries and has been responsible for the deaths of millions and millions of people. When TB infects a person, it doesn’t normally cause havoc right off. Instead, it’s kind of a time-bomb in the sense it can sit and sit and sit (like Ryan Seacrest announcing the results on American Idol) in the organs, and then months to years later-kaboom! Pneumonia, night sweats, weight loss, kidney damage, and so forth can occur. That is why so many people have died from TB.

It’s estimated that two to five percent of people who “catch” TB will have active TB within three months. Under the age of 35, about 10-20 percent will develop active TB sometime in their lives-usually when they’re old or the immune system isn‘t doing so well. That’s why HIV+/AIDS people are more at risk for active TB. TB was on the decline from 1953 to 1985, but it started to increase when HIV became prevalent.

Since TB infection doesn’t just jump out at you, PPD testing is done to see if the bacteria is hiding somewhere in the body. An antigen, purified protein derivative (PPD), is injected just under the skin, and 48-72 hours later it’s checked to see if there’s a reaction. So when you hear someone is PPD+ (which I assume Speaker was), it means they have been infected with TB. But it doesn’t mean they have active TB or that they are infectious.

If someone is PPD+, antimicrobial drugs can be recommended to treat the TB bacteria in hopes it won’t become active later in life-like your retirement party or your 50th wedding anniversary. The problem is, ahem, many patients don’t take their TB antimicrobial medicines correctly, and so drug-resistant strains of TB keep popping up (like Lindsay Lohan’s face on the news).

MDR-TB is when the two main drugs to treat TB fail: isoniazid and rifampin. If the TB bacteria is resistant to even more antimicrobials, it is called XDR-TB (extensively drug resistant TB). XDR-TB sounds like a model of a stereo system, but it isn’t because XDR-TB puts you in bad treble. (Sorry, but like MDR-TB, I just couldn’t resist.)

So back to the TB lawyer-what’s the deal? I don’t know how they know he has XDR-TB since he doesn’t have symptoms. Is he just PPD+, or does he have active TB?
I hate the news. They often just stir the pot but don’t serve us the… TB dinner.

© John S. Hong, MD, MS July 4, 2007

3 Comments

  1. Date: Tue, 3 Jul 2007 09:45:52 -0400
    >From: “Lisa Pelegrin”
    >To: editor@readthehook.com
    >Subject: Letter to the Editor - John Hong’s editorial 6/28/07

    >I am writing in response to John Hong’s editorial about tuberculosis
    >(June 28, 2007). First, I’d like to clarify that Andrew Speaker had
    >XDR-TB, not MDR-TB, which is a deadlier and harder to treat strain of
    >TB. Without an increased response from our elected officials, it is a
    >problem that will only get worse.
    >
    >TB is already a quickly growing threat to global public health;
    >one-third of the world is infected with TB and 1.6 million people die
    >of it annually. TB is also the number one killer of people with AIDS.
    >It is within our power and ability to control this grave health threat!
    >TB treatment and research is grossly under-funded and a critical piece
    >of legislation in both the House and Senate called the Stop TB Now Act
    >of 2007 will help remedy this (bill number H.R. 1567 for the House and
    >S. 968 for the Senate). If passed, this act would authorize up to $400
    >million in 2008 and $550 in 2009 to enhance and provide basic treatment
    >as well as funding for research to combat XDR-TB. I urge readers to
    >please take a stand by writing to your Congressmen and women about the
    >Stop TB Now Act to ask them to co-sponsor this bill.
    >
    >-Lisa Pelegrin
    >Harrisonburg, Va
    >James Madison University
    >College of Arts and Letters
    >RESULTS Educational Fund
    >ACTION Intern
    >HealthDotComm
    >JMU Women’s Ultimate

    Comment by admin — July 4, 2007 @ 10:09 am

  2. Dear Dr. Hong,
    I enjoy your column in the HOOK. Regarding “TB or not TB” I wonder whether your medical facts were acquired here at UVa? I taught Clinical Microbiology between 1979 and 1996 and cannot remember that I or any of my colleagues ever defined tuberculosis as “a bacteria”. TB is the disease caused by the bacterium, Mycobacterium tuberculosis, and it is the disease that has been responsible for the death. Please don’t call a bacterium (Latin neuter singular) “a bacteria” as bacteria is plural, and it is not feminine.

    Kind regards,
    Dieter H.M. Grvschel, M.D.

    An old microbiologist and

    Professor emeritus,

    UVA Schoold of Medicine

    Departments of Pathology

    and Internal Medicine

    Comment by admin — July 4, 2007 @ 10:21 am

  3. Thank you both for your information. Well, as far as “Bacteria” I just try to write for laypersons, but our professor is right. And the mystery continues because this morning July 4, they now say it is MDR-TB. But does he have active TB? I am still confused.

    Comment by admin — July 4, 2007 @ 10:23 am

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