Few patients seem aware of the risk, and even doctors are slow to recognize it. As one allergist who has seen 200 cases on New York's Long Island said, "Why would someone think they're allergic to meat when they've been eating it their whole life?" The culprit is the Lone Star tick, named for Texas, a state famous for meaty barbecues. The tick is now found throughout the South and the eastern half of the United States. Researchers think some other types of ticks also might cause meat allergies; cases have been reported in Australia, France, Germany, Sweden, Spain, Japan and Korea. Here's how it happens: The bugs harbor a sugar that humans don't have, called alpha-gal. The sugar is also is found in red meat - beef, pork, venison, rabbit - and even some dairy products. It's usually fine when people encounter it through food that gets digested. But a tick bite triggers an immune system response, and in that high-alert state, the body perceives the sugar the tick transmitted to the victim's bloodstream and skin as a foreign substance, and makes antibodies to it. That sets the stage for an allergic reaction the next time the person eats red meat and encounters the sugar.The mote that the medical community finds out about ticks, the worse the prognosis if one gets bitten. Here is where the Lone Star Tick is found in the US.There is so little that is really known about tick-vector illnesses, that--as in NH--anyone bitten should get at least a big loading dose of doxycycline. I fully understand that it will not help the alpha-gal allergic reaction, but it does provide prophylaxis against most other bacterial and parasitic illnesses.Now on to ebola..Current ebola outbreak possibly far worse than we know. This hardly qualifies as news. Underreporting of ebola is likely the norm. That the official figures could be 50% lower than actual cases is eyebrow raising, but not entirely unexpected.Read the reader comments by the armchair scientific and/or medical experts. I fear for the present of my country. Fear, uncertainty and doubt, reign supreme in the USofA. We are so fearful, we cannot--as a populace--ever get anything done on the really big issues. Yes, Virginia, fear of job loss is indeed a fear. I see the only true hope for humanity is far less humans inhabiting this tiny blue slightly oblate sphere. No, I am not advocating any draconian measures to wipe out a few billions of people. But we could start by not replacing the fallen. Nah. That's far too reasonable to be considered. We are almost certainly doomed as 'functioning' societies. We are burning things up at many levels.See! I told you it is Happy Friday! Have fun, and play safe!
a lowly engineer 's attempt at hard science reporting and digressions into a childhood ecstacy not yet lost
Friday, August 08, 2014
Tick Vector Meat Allergies and Ebola
Hey, it is Happy Friday!The first bit I have known about for some time. The link between some tick bites and an allergic reaction to red meats is not new, but the mechanism now seems understood. Read on, gentle reader:
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