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What Causes Influenza?

Influenza is a disease that everyone has heard for a long time. But may not know the details about the various species and the exact prevention and treatment methods Influenza spreads more quickly and is more dangerous than many people think. Around the world, 250,000 – 500,000 people die from influenza each year, while Thailand has around 1,000 to 2,000 people with influenza per year. Population of 100,000 people, just within January-August In 2015, 23 people died of influenza. These patients range from young to old. Even healthy people can become infected with the influenza virus and spread the virus to people around them.

Influenza virus
Influenza is caused by a virus called Influenza Virus, which is the cause of acute respiratory infections. The infection usually begins in the upper respiratory tract (nose and throat) and spread to the lungs and bronchi, respectively. The first isolation of the influenza virus occurred in 1993 with three major strains: strains A, strains B and strains C, which are the least violent.

Strains A and B are found all over the world. A species can spread throughout the year, while B species are seasonal flu, which is prevalent during the winter and rainy season because influenza viruses thrive especially in cold conditions.

The outbreak of every species in many years Making it difficult to predict which species will be dominant each year or which will be epidemic during each season, although the A type virus is the main species in the past But the virus B species began to spread and is as violent as A species since the year 2000 onwards.

Symptoms of influenza
The difference between influenza and common cold Meaning that the flu will be more severe, longer and more severe Learning the differences between the two flu can help patients diagnose their symptoms and receive medical attention before it’s too late.

Complications of influenza
Patients with influenza are at greater risk of complications and chronic illnesses until the death. The main complications include:

Respiratory complications

The patient may have more severe symptoms than coughing or having normal skin to the chest tightness. Wheezing throughout the pain Or sore in the middle of the chest Respiratory complications can lead to pneumonia or bronchitis.

Cardiac complications

Patients may have changes in sound or heart rate. Patients with already having heart disease may have severe lung complications. Patients may have myocardial infarction. Heart attack and death

Neurological complications

Neurological complications including meningitis Often occurs in pediatric patients Symptoms that indicate these complications may include seizures, confusion or wake-ups.

Other complications may include hypotension, shock, kidney failure, and liver failure.


Influenza risk groups can be found at any age. But the risk groups for severe complications are as follows

  • Children from 6 months to 2 years
  • Women who are pregnant for more than 4 months
  • Mentally disabled
  • People who are over 100 kg or overweight
  • Smoker
  • People with 7 chronic illnesses, such as obstructive asthma, heart, stroke, kidney failure, diabetes, and cancer patients receiving chemotherapy.
  • People over 65 years old
  • Medical personnel
  • These at-risk patients should see a doctor immediately if infected with the flu.

Prevention of influenza You can protect yourself from influenza as follows.

  • Avoid being close to the patient
  • Avoid crowded places during the influenza virus outbreak.
  • Wash hands frequently and wash hands thoroughly every time
  • Avoid putting hands in mouth or rubbing eyes
  • Do not share personal items with others, such as glasses, towels.
  • Vaccinated against influenza every year Especially the scene measures to prevent 4 influenza strains that cover the infection
  • Virus as efficiently as possible
  • Flu … prevented by vaccines
  • Vaccination against influenza As an alternative to increasing immunity to prevent disease should be injected first.
  • Rainy season which is an important epidemic period Because influenza virus strains will change all the time
  • Should be vaccinated against influenza every year Currently, the World Health Organization and doctors recommend vaccinations because Helps to reduce the rate of influenza is up to 90% without worrying about complications. Reduce the cost of medical treatment. Uninterrupted work Because of having to take leave when sick
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