Most people have symptoms for about one to two weeks and again no problem. But with most other viral respiratory infections such as colds, influenza (flu), the infection can be compared to a serious illness, death rate (death rate) from 0.1% of the virus that causes an infection.

Influenza is transmitted when an infected person sneezes or coughs in the public places, like market, shoping mall, bus, trains etc.The particles pass through the air, where they infect, with whom they come into contact. If an infected person uses a phone, the infection can be transmitted to the next person who uses the phone. Since the infected person may not know has the flu, can touch many objects do not have to notice the spread of the virus to others.

Infected persons may be prudent not to transmit the virus to others. Besides covering the mouth and nose when coughing or sneezing, washing hands often and make every effort to avoid contact with others. Suffering from the flu is asked to stay home from work or school. Even the most popular employers will have more of an infected person stay at home as the starting point of the epidemic in the workplace. Someone outside the house is only called a series of catastrophic events. Many people may be infected when an infected person riding a crowded subway or go to the cinema.

Types of influenza virus

The classification of viruses of influenza viruses are RNA viruses. Influenza viruses can make up three of the five genera in the family Orthomyxoviridae:

1. Influenza virus type A

2. Influenza virus type B

3. Influenza virus type C

These distance that humans are related the viral RNA paramyxovirus family that a common cause of respiratory infections in children, such as laryngitis, but can also cause an illness similar to influenza among adults.

Signs and symptoms

Symptoms of influenza may begin suddenly one or two days after infection. The first symptoms are chills or a cold sensation, but fever is also common in the early stages of infection, the body temperature of 38-39 degree centigrade (about 100-103 F). Many people are so sick is confined to bed for several days with pain in his body, which is even worse in the back and legs. Symptoms of flu include:

* Fever and extreme coldness (chills shivering, shaking (rigor))
* Nasal congestion
* Fatigue
* In children, gastrointestinal symptoms such as diarrhea and abdominal pain, (may be severe in children with influenza B)
* Irritated, watering eyes
* Cough
* Body aches, especially joints and throat
* Headache
* Reddened eyes, skin (especially face), mouth, throat and nose

What is the new influenza A (H1N1)?

There is a new influenza virus, which is called A (H1N1) that has never before spread among human being .The virus is not about the past or current influenza viruses involving human.

Why are we so worried about this flu when hundreds of thousands die every year from seasonal epidemics?

Seasonal flu happens every year and the virus changes every year - but many people have some immunity to help the infection of the virus circulating in the limit

However, influenza A (H1N1) is a new virus and that most people have little or no immunity and the virus can cause infections is more than seasonal influenza. WHO works closely with manufacturers to develop a safe and effective vaccine to accelerate, but there are still a few months before it is available.

With influenza A (H1N1) seems just as contagious as seasonal flu and spread rapidly, especially among young people (between 10 and 45).