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This diary entry is written by YaoiNeko. ( View all entries )
Previous entry: Diary 3 May 2009 in category (general)

Swine FluCategory: (general)
Monday, 4 May 2009
04:06:08 PM (GMT)
Swine influenza is common in pigs in the midwestern United States and occasionally
in other states. In Mexico, Canada, South America, 

Europe the United Kingdom, Sweden, and Italy), Kenya, Mainland China, Taiwan, Japan
and other parts of eastern Asia.

Transmission of swine influenza virus from pigs to humans is not common and properly
cooked pork poses no risk of infection. When 

transmitted, the virus does not always cause human influenza and often the only sign
of infection is the presence of antibodies in the 

blood, detectable only by laboratory tests. When transmission results in influenza in
a human, it is called zoonotic swine flu. People who 

work with pigs, especially people with intense exposures, are at risk of catching
swine flu. However, only about fifty such transmissions 

have been recorded since the mid-20th Century, when identification of influenza
subtypes became possible. Rarely, these strains of swine 

flu can pass from human to human. In humans, the symptoms of swine flu 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 2009 flu outbreak in humans, known as "swine flu", is due to a new strain of
influenza A virus subtype H1N1 that contained genes most 

closely related to swine influenza. The origin of this new strain is unknown,
however, and the World Organization for Animal Health (OIE) 

reports that this strain has not been isolated in pigs. This strain can be
transmitted from human to human, an ability attributed to an as-yet 

unidentified mutation, and causes the normal symptoms of influenza.

1918 swine flu in human beains

In 1918 the flu that in humans was associated with H1N1 and influenza appearing in
pigs,thus may reflect a zoonosis either from swine to 

humans to from humans to the swine flu. Although it is not certain in which direction
the virus was transferred, the available evidence 

suggests that pigs caught the disease from humans. For instance, swine influenza was
only noted as a new disease of pigs in 1918, after the 

first large outbreaks of influenza amongst humans. Phylogenetic analysis of more
recent strains of influenza in humans, birds, and swine 

suggests that the 1918 outbreak in humans followed a reassortment event.

Swine influenza was first proposed to be a disease related to human influenza during
the 1918 pandemic, when pigs became sick at the 

same time as humans. The first identification of an influenza virus as a cause of
disease in pigs occurred about ten years later, in 1930.For 

the following 60 years, swine influenza strains were almost exclusively H1N1. Then,
between 1997 and 2002, new strains of three different

In pigs influenza infection produces fever, lethargy, sneezing, coughing, difficulty
breathing and decreased appetite.In some cases the 

infection can cause abortion. Although mortality is usually low (around 1-4%)the
virus can produce weight loss and poor growth, causing 

economic loss to farmers. Infected pigs can lose up to 12 pounds of body weight over
a 3 to 4 week period.

50 cases are known to have occurred since the first report in medical literature in
1958, which have resulted in a total of six deaths.Of 

these six people, one was pregnant, one had leukemia, one had Hodgkin disease and two
were known to be previously healthy.Despite 

these apparently low numbers of infections, the true rate of infection may be higher,
since most cases only cause a very mild disease, and 

will probably never be reported or diagnosed.

code_geass_attic says:   9 May 2009   126754  
so the swine flu started in 1918
YaoiNeko says:   9 May 2009   322112  
yes i'm afarid so
Xandir says :   27 May 2009   475436  


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