- published: 08 May 2009
- views: 135932
Swine influenza, also called pig influenza, swine flu, hog flu and pig flu, is an infection caused by any one of several types of swine influenza viruses. Swine influenza virus (SIV) or swine-origin influenza virus (S-OIV ) is any strain of the influenza family of viruses that is endemic in pigs. As of 2009, the known SIV strains include influenza C and the subtypes of influenza A known as H1N1, H1N2, H2N1, H3N1, H3N2, and H2N3.
Swine influenza virus is common throughout pig populations worldwide. Transmission of the virus from pigs to humans is not common and does not always lead to human flu, often resulting only in the production of antibodies in the blood. If transmission does cause human flu, it is called zoonotic swine flu. People with regular exposure to pigs are at increased risk of swine flu infection.
During the mid-20th century, identification of influenza subtypes became possible, allowing accurate diagnosis of transmission to humans. Since then, only 50 such transmissions have been confirmed. These strains of swine flu rarely pass from human to human. Symptoms of zoonotic swine flu in humans are similar to those of influenza and of influenza-like illness in general, namely chills, fever, sore throat, muscle pains, severe headache, coughing, weakness and general discomfort.
The domestic pig (also swine, in some areas hog) is a large domesticated land mammal that traces its ancestry to the wild boar, and is considered a subspecies of the wild boar or a distinct species in its own right. It is likely the wild boar was domesticated as early as 13,000 BC in the Tigris River basin. Pigs are farmed for the consumption of their flesh; however, some cultures have religious dietary laws that forbid the consumption of pork, which is the name for pig meat. The animal's bones, hide, and hair have been fashioned into items such as brushes. Pigs, notably the pot-bellied pig, are also kept as pets. Miss Piggy, Babe, and Porky the Pig represent the domestic pig in entertainment and "The Three Little Pigs", Charlotte's Web, and The Sheep-Pig are prominent examples of the domestic pig in literature.
Most domestic pigs have rather sparse hair covering on their skin, although woolly coated breeds, such as the Mangalitsa, are raised.
The domestic pig is most often treated as a subspecies of its wild ancestor, the wild boar, which was given the name Sus scrofa by Carl Linnaeus in 1758, in which case its formal name is Sus scrofa domesticus. In 1777, Johann Christian Polycarp Erxleben treated the domestic pig as a separate species from the wild boar. He gave it the name Sus domesticus, which is still used by some taxonomists to this day. Wild boars were in human association as early as 13,000–12,700 BC. Escaped domestic pigs have become feral in many parts of the world (for example, New Zealand) and have caused substantial environmental damage.
You know what they say
" 'bout picking up a stray"
It could turn out to be swine flu
Dumped by the road
Why don't you take me home
And you have your very own swine flu
Swine Flu
Swine Flu
Soon all the time
You hear a familiar noise
The piercing whining howl of swine flu
It never goes away
It bugs you every day
You never hear the end of swine flu
Give me food
Give me love
And when you do
I'll whine some more
Let me in, let me out
Only you'd keep me around
Plunk a dead rat on the floor
Aren't you proud of me? Can I lick you now?
Poison oak caked in my fur
For me to brush against your skin
Swine Flu
Swine Flu
Swine Flu
You all are insane
To shelter, feed and put up with me
My self-esteem's so bad
My grateful gift to you
Is yowl, yowl, yowl, yowl, yowl
yowl, yowl, yowl, yowl, yowl
'Til you're down to my level
Swine Flu
Swine Flu
My childhood was bad
And this is my revenge
You'll never hear the end of swine flu
Swine Flu
Swine Flu