Agriculture
Hungry bug seeks hot meal
Earth-Friendly Fabrics
Silk’s superpowers
Amphibians
Frogs and Toads
Tree Frogs
Salamanders
Animals
Baboons Listen for Who's Tops
Gliders in the Family
A Wild Ferret Rise
Behavior
The Other Side of the Zoo Fence
Wake Up, Sleepy Gene
Body clocks
Birds
Waterfowl
Songbirds
Parrots
Chemistry and Materials
Supergoo to the rescue
The Taste of Bubbles
The Buzz about Caffeine
Computers
Music of the Future
Lighting goes digital
Troubles with Hubble
Dinosaurs and Fossils
Battling Mastodons
Three strikes wiped out woolly mammoths
Middle school science adventures
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Earth
Less Mixing Can Affect Lake's Ecosystem
Wave of Destruction
Undersea Vent System Active for Ages
Environment
Alien Invasions
Bald Eagles Forever
Fishing for Fun Takes Toll
Finding the Past
Salt and Early Civilization
Traces of Ancient Campfires
A Human Migration Fueled by Dung?
Fish
Lampreys
Tilapia
Perches
Food and Nutrition
A Pepper Part that Burns Fat
Packing Fat
A Taste for Cheese
GSAT English Rules
Subject and Verb Agreement
Whoever vs. Whomever
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
10 Common Mistakes When Preparing for the GSAT Math Test
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Access denied - Disabled boy aces GSAT
GSAT Mathematics
GSAT Practice Papers | GSAT Mathematics | Maths
Prime Time for Cicadas
How a Venus Flytrap Snaps Shut
Human Body
Heavy Sleep
A Long Trek to Asia
A Fix for Injured Knees
Invertebrates
Oysters
Snails
Dragonflies
Mammals
Chinchillas
Mouse
Dingoes
Parents
How children learn
The Surprising Meaning and Benefits of Nursery Rhymes
Expert report highlights the importance to parents of reading to children!
Physics
The Mirror Universe of Antimatter
The Particle Zoo
Speedy stars
Plants
White fuzzy mold not as friendly as it looks
Tracking the Sun Improves Plant Pollen
Fungus Hunt
Reptiles
Cobras
Turtles
Crocodiles
Space and Astronomy
Melting Snow on Mars
Intruder Alert: Sweeping Space for Dust
Black Holes That Burp
Technology and Engineering
Are Propellers Fin-ished?
Spinach Power for Solar Cells
Dancing with Robots
The Parts of Speech
Pronouns
What is a Noun
What is a Preposition?
Transportation
Where rivers run uphill
Middle school science adventures
Flying the Hyper Skies
Weather
Arctic Melt
The solar system's biggest junkyard
Weekend Weather Really Is Different
Add your Article

Protecting Cows—and People—from a Deadly Disease

Chomping at a juicy hamburger might be a little less tempting than it once seemed. It took just one case of mad cow disease, discovered in December, to make several countries ban imports of U.S. beef. Officials in Japan and elsewhere are afraid that people may eat infected meat and develop the human version of mad cow disease.

Mad cow disease gets its name because cattle infected with it behave strangely. They seem nervous and distressed. They can’t stand or walk properly.

These symptoms are caused by the breakdown of the animal’s nervous system. Deformed proteins, known as prions, multiply and worm their way through an infected cow’s brain and nerves, making the tissue look like a sponge.

These prions have a similar effect in people. They can cause the fatal human disease known as variant Creutzfeldt-Jakob disease (vCJD). Eating infected beef is the only known way for the prions to go from a cow to a person.

Consuming infected meat is also the main way prions are transferred from one cow to another. This can happen because of an old method of producing food for cows. When cows were slaughtered for their meat and hides, some of their remains—including their brains, eyes, spinal cords, and intestines—used to be processed to make animal feed containing protein.

This type of feed was banned in 1997 when scientists realized that it was responsible for the spread of mad cow disease.

Christl Donnelly of Imperial College in London says that as long as the ban on this type of feed is enforced, mad cow disease shouldn’t spread in the United States. This means it’s also highly unlikely the disease would spread to people.

Officials at the U.S. Department of Agriculture are taking an extra precaution. They’re planning on tracking every cow that will be used for beef, from its birth until it ends up in the grocery store.—S. McDonagh

 

Protecting Cows—and People—from a Deadly Disease
Protecting Cows—and People—from a Deadly Disease








Designed and Powered by HBJamaica.com™