tag:blogger.com,1999:blog-7225901745216454303.post3485539730280188802..comments2023-08-24T09:30:37.809-07:00Comments on Carbon Dating: Things That Go Chomp in the NightMozarthttp://www.blogger.com/profile/06098420179804637111noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7225901745216454303.post-55502081623744748062009-08-08T00:09:25.805-07:002009-08-08T00:09:25.805-07:00Stole this off the Internet:
It was long thought ...Stole this off the Internet:<br /><br /><i>It was long thought only humans could get leprosy. Then in the late 1960s researchers speculated that armadillos might be a good test bed for leprosy research because (a) M. leprae thrives in cooler parts of the body (feet, nose, ears, etc.); (b) armadillos have a relatively low body temperature as mammals go, 30 to 35 degrees Celsius compared to 37 degrees in humans (98.6 Fahrenheit for you retro types); (c) armadillos live long enough, 12 to 15 years, for this slow-acting disease to emerge; and (d) armadillo litters almost invariably consist of identical quadruplets, which was useful for genetic experiments. <br /><br />Aspects of this conjecture might seem far-fetched (I'm thinking of the low body temp part), but it panned out. Several nine-banded armadillos, the type found in the U.S., were inoculated with leprosy germs and came down with full-blown cases of the disease. <br /><br />Later the researchers discovered something odd: some armadillos already had leprosy. At first they thought the animals had escaped from the leprosy-inoculation experiment or become infected through contact with the lab's waste. But eventually these possibilities were ruled out. Nine-banded armadillos, of which there are 30 to 50 million in the southeastern U.S., are believed to be the only significant natural reservoir of leprosy apart from humans. (A few cases have been found in chimps and mangabey monkeys in Africa.) How the armadillos got leprosy in the first place nobody knows. But there you are. <br /><br />Should you live in fear that you'll be infected by an armadillo? Well, if you're going to worry about AIDS and hepatitis C, you might as well round out your paranoia by worrying about leprosy. Realistically, though, the chances are slim. <br /><br />While suspected instances of 'dillo-to-human transmission have been reported, leprosy remains uncommon in the U.S. and Canada (6,000 U.S. cases) and is in long-term decline worldwide--an estimated 2.4 million cases as of 1994. Fewer than 5 percent of wild armadillos have it, though I grant you that 5 percent of 30 to 50 million is a lot of armadillos. <br /><br />The disease is not especially contagious; researchers think that 95 percent of humans are naturally immune. Leprosy is treatable, and a vaccine (not totally effective) is currently available. While one doesn't wish to minimize the consequences of this disease, it's not the certain nightmare it used to be. Equally important, there's no need for people who have it to be treated like, you know, lepers. <br /><br /></i>Mozarthttps://www.blogger.com/profile/06098420179804637111noreply@blogger.comtag:blogger.com,1999:blog-7225901745216454303.post-77792429215268644282009-08-06T14:23:46.576-07:002009-08-06T14:23:46.576-07:00That is one revolting bug.
I came across an armad...That is one revolting bug.<br /><br />I came across an armadillo in a campground in south Georgia once - it held still and let me pet it. I hadn't heard the leprosy thing, though.secret agent womanhttps://www.blogger.com/profile/03763879283931347382noreply@blogger.com