What Is Swine Flu? Symptoms & How Is Swine Flu Treated?

Swine flu (swine influenza) is a disease of pigs. It is a highly contagious respiratory disease caused by one of many Influenza A viruses. Approximately 1% to 4% of pigs that get swine flu die from it. It is spread among pigs by direct and indirect contact, aerosols, and from pigs that are infected but do not have symptoms. In many parts of the world pigs are vaccinated against swine flu.

Most commonly, swine flu is of the H1N1 influenza subtype. However, they can sometimes come from the other types, such as H1N2, H3N1, and H3N2.

The current outbreak of swine flu that has infected humans is of the H1N1 type - this type is not as dangerous as some others.

What is the risk for human health?
Outbreaks of human infection from a virus which came from pigs (swine influenza) do happen and are sometimes reported. Symptoms will generally be similar to seasonal human influenzas - this can range from mild or no symptoms at all, to severe and possibly fatal pneumonia.

As swine flu symptoms are similar to typical human seasonal flu symptoms, and other upper respiratory tract infections, detection of swine flu in humans often does not happen, and when it does it is usually purely by chance through seasonal influenza surveillance. If symptoms are mild it is extremely unlikely that any connection to swine influenza is found - even if it is there. In other words, unless the doctors and experts are specifically looking for swine flu, it is rarely detected. Because of this, we really do not know what the true human infection rate is.

How does a human catch swine influenza?

• From contact with infected pigs (most common way)
• From contact with infected humans (much less common way)

In cases when humans have infected other humans close contact was necessary with the infected person, and they nearly always occurred in closed groups of people.

What are the signs and symptoms of swine influenza in humans?
They are similar to those of regular flu, and include:

• Fever, which is usually high, but unlike seasonal flu, is sometimes absent
• Body aches
• Chills
• Cough
• runny nose or stuffy nose
• Diarrhea (less common)
• Headache
• Sore throat
• Temperature (fever)
• Tiredness (fatigue)
• Vomiting (less common)

Do we have a specific swine flu vaccine?
No - not for humans.

What can I do to protect myself?

• Wash your hands regularly with soap
• Try to stay healthy
• Get plenty of sleep
• Do plenty of exercise
• Try to manage your stress
• Drink plenty of liquids
• Eat a well balanced diet
• Refrain from touching surfaces which may have the virus
• Do not get close to people who are sick
• Stay away from crowded areas if there is a swine flu outbreak in your area

If I am infected, how can I stop others from becoming infected?

• Limit your contact with other people
• Do not go to work or school
• When you cough or sneeze cover your mouth with a tissue. If you do not have a tissue, cover your mouth and nose.
• Put your used tissues in a waste basket
• Wash your hands and face regularly
• Keep all surfaces you have touched clean
• Follow your doctor's instructions

What You Need To Know

• Swine flu likely spreads by direct contact with respiratory secretions of someone that is sick with swine flu, like if they were coughing and sneezing close to you.
  
  
• People with swine flu are likely contagious for one day before and up to seven days after they began to get sick with swine flu symptoms.
  
  
• Droplets from a cough or sneeze can also contaminate surfaces, such as a doorknob, drinking glass, or kitchen counter, although these germs likely don't survive for more than a few hours.
  
  
• Anti-flu medications, including Tamiflu (oseltamivir) and Relenza (zanamivir), are available to prevent and treat swine flu.
  
  
• The latest swine flu news from the CDC includes advice that students should stay home if they have swine flu symptoms, but schools do not need to close unless they have large clusters of cases that are affecting school functioning. Schools that closed based on previous recommendations, such as if they had a single confirmed case or probable case, can now likely reopen.

What is Swine Flu - Video
The Centers for Disease Control and Prevention (CDC) Influenza Division has produced a video all about swine flu.

This video includes information on the signs and symptoms of swine flu, how swine flu is transmitted, what medicines are available to treat it and steps that people can take to help protect themselves from it. There are also some tips on what to do if you become ill with swine flu.

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