What is Flu : Symptoms and Causes

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What is Flu : Symptoms and Causes

Freeliveyoung.comWhat is Flu? Flu is a common contagious disease caused by a virus, also known as influenza. Flu is often mistaken for a common cold because it has the same symptoms. However, viruses that cause flu differ from colds and flu tend to be more serious. In fact, severe flu can be life-threatening.

What is Flu: Symptoms and Causes

Causes of Flu

Flu is caused by influenza virus. People can usually be infected in several ways as follows:
  • Through breathing, transmitted by sneezing or coughing from a person with the flu, thereby generating aerosol (airborne fine particles floating in the air) containing the virus.
  • Directly related to fluid/mucus that has been contaminated by an infected person, such as through touch, smell, or sharing of cutlery
  • Touching the surface of objects (door handles, towels, handrail, TV remote, keyboard, phone, etc.) are contaminated with viruses. This virus can move or be absorbed when we touch the eyes, nose, or mouth.
Flu viruses can be classified as Type A, B, and C. Type A is further classified into subdivisions of different chemical (serotype) virus structures based on antibody responses to this virus. The type of virus that stricken will cause different symptoms. Types A and B cause the most common types of viruses and are responsible for the outbreak of influenza and seasonal flu outbreaks. Type A viruses can attack animals and humans, whereas influenza type B attacks only humans.
Flu type C is less common and is not associated with seasonal flu. This type usually causes mild respiratory symptoms and is less serious than other types.
Some people get more flu than others. In addition, flu outbreaks usually occur in the winter because the temperature is an ideal condition for the virus to survive. Flu is also more easily spread when people are mostly in the room and more often associated with others. Read More: How to treat flu and fever with natural remedies.

Main Symptoms of Flu

The flu will start producing symptoms within one to seven days after contact with the flu virus. Virus mostly affects the throat, nose, and lungs. Symptoms often start quickly and usually begin with a fever between 38.8 - 40 ºC (102-106 ºF). Along with a fever, there are common symptoms such as the following:
  • Body aches and muscle aches
  • Sore throat
  • Fever
  • Face flushed
  • Lack of appetite
  • Headache
  • Dizziness and nausea
  • Lack of energy
After a few days, the pain and fever usually subside. However, new symptoms begin to occur such as:
  • Dry cough
  • Colds (clear and watery)
  • Sneezing
  • Nasal congestion
  • Weigh respiration
It usually takes about 7 days until the symptoms go away completely. For some people, coughing and fatigue can last for weeks. For others, respiratory problems such as asthma and other long-term illnesses are exacerbated by the flu. Read Too: 10 Ways to Avoid Avoid Flu.
It is important to note the difference between colds and flu. Colds are also caused by viruses, but have milder symptoms and disappear after a few days. While the flu, making unhealthy and fatigue for long periods of time. Flu can also lead to serious health problems such as pneumonia and sometimes need to require hospitalization.
A flu patient can transmit the disease from the day before to seven days after the first symptoms are seen, even after most of the symptoms disappear. Young children with the flu can be infectious even after the second week of the disease. Thanks for reading: What is Flu : Symptoms and Causes article.

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