Rushville Republican

Community News Network

December 5, 2012

How animals spread diseases to us

IOWA CITY — "Everybody knows that pestilences have a way of recurring in the world; yet somehow we find it hard to believe in ones that crash down on our heads from a blue sky." — Albert Camus, "The Plague"

In May, 1997, a 3-year-old boy was admitted to an ICU in Hong Kong after suffering from influenza for a week. Two days later, the boy died of pneumonia. His case would have been merely a curiosity if it weren't for 17 more patients who came down with the illness months later. In all, six people died from a strain of influenza that had never been seen in humans before, dubbed H5N1.

However, H5N1 wasn't really "new." It had caused outbreaks in Scottish chickens in 1959 and British turkeys in 1991. It had killed geese in Guangdong, China, in 1996. But these bird outbreaks weren't considered important by physicians or researchers on human disease — this was an avian strain of influenza, and it was thought that humans had little to be concerned about.

That changed abruptly in 1997, when the human cases led to the destruction of 1.3 million chickens in Hong Kong to stop the outbreak. That strategy seemed to work in the short term, but H5N1 has since surfaced in more than two dozen countries and caused more than 600 human infections since 1997 — almost half of them fatal.

While scientists were closely following the movements of H5N1, another influenza virus — H1N1 — snuck up on us in 2009 and spread around the world in a matter of weeks. This was the first influenza pandemic of the 21st century, and like H5N1, it moved to humans from animals — in this case, from pigs.

When new infectious diseases are discovered, one of the first questions is "where did this come from?" More often than not, the answer is one of our animal friends — a kind of disease called a zoonosis. Studies have shown that about 75 percent of emerging infectious diseases (diseases that are newly discovered, are increasing in frequency or have moved into a new geographic area) are of animal origin, as are 60 percent of all known pathogens. Even diseases that have spread freely in the human population, such as tuberculosis, HIV, measles and smallpox, have their roots in infections carried by animals.

Text Only
Community News Network
  • Screen Shot 2014-04-22 at 4.42.47 PM.png VIDEO: Leopard attacks crowd in India

    A leopard caused panic in the city of Chandrapur when it sprung from the roof of a house and charged at rescue workers.

    April 22, 2014 1 Photo

  • The top 12 government programs ever

    Which federal programs and policies succeed in being cost-effective and targeting those who need them most? These two tests are obvious: After all, why would we spend taxpayers' money on a program that isn't worth what it costs or helps those who do not need help?

    April 22, 2014

  • In cuffs... 'Warlock' in West Virginia accused of sexual assault

    Police in West Virginia say a man claiming to be a “warlock” used promises of magical spells to lure children into committing sexual acts with him.

    April 22, 2014 1 Photo

  • Cats outsmart the researchers

    I knew a lot had been written about dogs, and I assumed there must be at least a handful of studies on cats. But after weeks of scouring the scientific world for someone - anyone - who studied how cats think, all I was left with was this statement, laughed over the phone to me by one of the world's top animal cognition experts, a Hungarian scientist named Ádám Miklósi.

    April 22, 2014

  • McCain 1 House Republicans are more active on Twitter than Democrats

    Your representative in the House is almost certainly on Twitter. Your senator definitely is. But how are they using the social network? Are Democrats more active than Republicans, or vice versa? Who has the most followers on the Hill?

    April 22, 2014 1 Photo

  • Do your genes make you procrastinate?

    Procrastinators, in my experience, like nothing better than explaining away their procrastination: General busyness, fear of failure, and simple laziness are just a handful of the excuses and theories often tossed around. Now researchers from the University of Colorado Boulder have added another option to the list: genetics.

    April 21, 2014

  • Do White Castle prices tell us anything about the minimum wage?

    The paper looked at how many delicious steamed sliders the minimum wage has been able to purchase over time. The point is that as it notes, in 1981, the $3.35 minimum could buy a whole dozen. Today, at $7.25, it could purchase just 10.

    April 21, 2014

  • VIDEO: Moose charges snowmobile, flees after warning shot

    While snowmobiling in New England, Bob and Janis Powell of Maine were charged by a moose and caught the entire attack on camera.

    April 21, 2014

  • Can Hillary Clinton rock the cradle and the world?

    What's most interesting to contemplate is the effect becoming a grandmother will have on Hillary's ambition. It's one of life's unfairnesses that a woman's peak career years often coincide with her peak childbearing years.

    April 21, 2014

  • Smartphone kill switches are coming

    Smartphones need kill switches. It's a relatively easy solution to the pricey (and irritating) problem of smartphone theft. But who would have thought that the big carriers would team up with Apple, Google, Microsoft, Nokia, Samsung and lots of other manufacturers to voluntarily begin adding the technology by July 2015? The cooperative spirit! It makes so much sense!

    April 18, 2014

Featured Ads
AP Video
Bon Jovi Helps Open Low-income Housing in Philly Pipeline Opponents Protest on National Mall Hagel Gets Preview of New High-tech Projects S.C. Man Apologizes for Naked Walk in Wal-Mart New Country Music Hall of Fame Inductees Named 'Piles' of Bodies in South Sudan Slaughter New Yorkers Celebrate Cherry Blossom Blooms SCOTUS Hears Tv-over-Internet Case Justice Dept. Broadening Criteria for Clemency Chief Mate: Crew Told to Escape After Passengers 'Miss Meadows' Takes Holmes Back to Her Roots Biden: Russia Must Stop Talking, Start Acting David Moyes Out As Manchester United Manager Raw: Leopard Bites Man in India Iowa College Finds Beauty in Bulldogs High Court to Hear Dispute of TV Over Internet Stowaway Teen Forces Review of Airport Security
Hyperlocal Search
Premier Guide
Find a business

Walking Fingers
Maps, Menus, Store hours, Coupons, and more...
Premier Guide
Parade
Magazine

Click HERE to read all your Parade favorites including Hollywood Wire, Celebrity interviews and photo galleries, Food recipes and cooking tips, Games and lots more.