Where does Swine flu come from?

Classical swine fever has been suggested in connection with human influenza illness during the influenza pandemic in 1918, when the pigs were sick at the same time as the people. The first identification of influenza virus caused disease in pigs have been almost ten years later, in 1930. For the following 60 years of swine influenza H1N1 strains were almost. Then, in 1997 and 2002, three new lines of different subtypes and five different genotypes emerged as causes of influenza in swine in North America. In 1997-1998, H3N2 strains were. These strains, which contain genes from the reassortment of human, swine and avian influenza viruses, has become one of the main causes for the classical swine fever in North America. Arises between H1N1 and H3N2 to H1N2. In 1999, Canada, the H4N6 strain, beyond the species barrier from birds to pigs, but it was in a form farm.The H1N1 swine is one of the progeny, resulting in the influenza pandemic, the 1918th As well as the remains of pigs are descendants of the 1918-virus is also distributed to 20 persons century, to the normal seasonal influenza epidemic. However, direct transmission from pigs to humans is rare, with only 12 cases in the United States since 2005. However, the maintenance of these lines of influenza strains in pigs in the groups were lost as a reservoir of swine influenza virus can survive, emerging later reinfect people as human immunity to this flu strains are waned.Swine are a number of occasions which usually confines itself to the human disease, only rarely, with a wide distribution. Outbreaks of classical swine fever and are causing significant economic losses in the industry, especially on growth disorders and an extension of time to market. For example, the disease has cost the British meat industry? 65 million per year.

What the hell is Swine Flu???

Swine flu (also known as swine influenza, swine flu and swine flu) is an infection by a number of animals using one of several types of microscopic organisms called "pig flu". Swine influenza A virus (SIV) is a strain of influenza virus of the family, which usually hosts (is endemic in) pigs. [2] of 2009, the known SIV strains are influenza C viruses and subtypes of influenza A virus known as H1N1, H1N2, H3N1, H3N2 and H2N3. Swine influenza is in pigs in the Midwestern United States (and occasionally in other states), Mexico, Canada, South America, Europe (including Britain, Sweden and Italy), Kenya, China, Taiwan, Japan and other parts of East Asia . [2]

Transmission of swine influenza viruses from pigs to humans is not common and not always lead to human flu, often in the production of antibodies in the blood. Meat from the animal, there is no risk of transmission of the virus, if properly prepared. If the transfer causes human influenza, it is a zoonotic swine influenza. People who have contact with pigs, especially those with intense exposures are at increased risk for the capture of swine influenza. In the middle of the 20th Century, the identification of influenza subtypes was possible, allowing a precise diagnosis of transmission to humans. For fifty confirmed transmissions were rare, these strains of swine influenza can be from person to person. In humans, the symptoms of swine flu control resemble those of influenza and influenza-like illness in general, chills, fever, sore throat, muscle pains, severe headache, coughing, weakness and general discomfort.

2009 swine flu outbreak in humans is by a new strain of influenza A virus subtype H1N1, the genes are closely related to swine influenza. [3] The origin of this new variety is unknown. But the World Organization for Animal Health (OIE) that this pressure has not been isolated in pigs. [4] This pressure can be from person to person, [5] and causes the usual symptoms of influenza. [6]

Pigs can be infected with human influenza, and this seems to happen during the 1918 influenza pandemic [citation needed] and the influenza outbreak of 2009 swine.