Swine influenza (swine flu) is a disease of pigs. It is a highly contagious respiratory illness caused by a different influenza A viruses. About 1% to 4% from pigs, which are the swine flu die. Develops direct and indirect contact pigs, aerosols, and pigs that are infected but have no symptoms. In many parts of the world, pigs are vaccinated against swine flu.

Swine influenza is most common subtype H1N1. However, sometimes they can become other types, such as H1N2, H3N1 and H3N2.

The current epidemic of swine flu that infected humans is H1N1 – is not as dangerous as some others.

Avian influenza (bird flu) can also infect pigs

Avian influenza and human seasonal influenza can infect pigs, and swine flu. The H3N2 subtype of influenza virus, a virulent, it is believed to come from pigs – he went to infect humans.

It ‘possible that pigs infected more than one subtype of influenza virus at the same time. When this happens the genes in viruses have the ability to socialize. When you mix the different subtypes of influenza, can create a new virus that contains genes from a variety of sources – the reassortant viruses.

Although the swine flu tend to infect pigs, they can sometimes jump the species barrier and infect humans.

What is the risk to human health ?

Outbreaks of people infected with the virus, which became the pigs (swine flu) occur, sometimes reported. Symptoms usually similar to seasonal human influences – this can range from mild symptoms or none at all, difficult and potentially fatal pneumonia.

Because the symptoms of swine flu-like symptoms typical of human seasonal influenza and other upper respiratory tract infections, the detection of swine influenza in humans is often not the case, and when it is usually mere coincidence, through the surveillance of seasonal influenza. If symptoms are mild, it is highly unlikely that your swine flu has been found – even if it’s there. In other words, if physicians and specialists are looking specifically for swine flu, has rarely been observed. So, do not really know what a real man is the number of infections.

Swine Flu Symptoms

• Chills
• Fever
• Sore throat
• Headache
• Fatigue
• Persistent cough
• Body aches
• Nausea/vomiting
• Diarrhea

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The vast majority of people who are infected with hepatitis B are able to fight against the virus, meaning that their infection will never be chronic (long term).

They can stay healthy without any symptoms, then they remove the virus from their bodies. Some do not even know they were infected.

However, until the virus was cleared from their bodies, can transmit the virus to others.

Common symptoms

Other people have symptoms similar to those of hepatitis, which includes:

• Flu-like symptoms such as fatigue, generalized aches and pains, headache and fever,
• Loss of appetite and weight loss,
• Nausea or vomiting
• Diarrhoea,
• Abdominal pain and
• Jaundice (see box).

Chronic infection

Hepatitis B is said to be chronic when you have been infected for more than six months.

The earlier the disease is contracted, the greater the chance of developing a chronic viral infection. Therefore, babies and children are particularly at risk of developing chronic diseases.

It is less common in adults: only 2-10% of people with hepatitis B will go on to have chronic infection in the UK.

If you have chronic hepatitis B, you can not have symptoms. This means that you can spread the virus without knowing it.

If you have symptoms that come and go. There is a possibility that you will develop permanent scarring of the liver, called cirrhosis, and may develop liver cancer.

Fulminant hepatitis B

Rarely, a severe form of hepatitis called fulminant hepatitis B occurs. Symptoms include collapsing, severe jaundice and swelling of the abdomen and can be fatal.

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