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What is FLU?

16 May 2017

What Is Flu?

What is FLU jpg1

The flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs. It can cause mild to severe illness, and at times can lead to death.

There’s common misconception that the flu is the same as a cold. Both are respiratory illnesses sharing the same symptoms but they are actually caused by different viruses.

  • A/H1N1
  • A/H3N2
  • B/Yamagata
  • B/Victoria

Four strains of flu viruses commonly circulate worldwide among people today-two influenza A strains and two influenza B strains. Seasonal flu strikes mainly during winter in temperate climates but unfortunately for those of us living in the tropical regions, influenza viruses circulate throughout the year.

Is That A Cold Or The Flu?

Coughing, sneezing and that achy, feverish feeling. How do you know whether you have symptoms of a cold or the flu?

Colds and the flu have a lot in common, so much so that it can sometimes be hard to tell them apart. Both are respiratory illnesses but they are caused by different viruses.

Colds are usually milder than the flu. While cold symptoms can make you feel miserable for a few days, flu symptoms are more intense and may also result in serious health problems such as pneumonia, bacterial infections and hospitalisations. It’s important to know the difference between flu and cold symptoms so that the illness can be treated accordingly.

The Differences Between Cold or Flu.


  • Will have stuffy or runny nose
  • Will have Sneezing
  • Will have cough with green or yellow gunk
  • Will have sore throat
  • Mild head & body aches
  • Will not have nausea
  • Rare cases fever for adults
  • Will not have any chills & sweats
  • The symptoms show slowly, over a few days.


  • Sometimes will have stuffy or runny nose
  • Sometimes will have sneezing
  • Dry cough
  • Sometimes have sore thoat
  • Severe aches all over body
  • Sometimes will have nausea
  • Will have fever
  • Will have chills @ sweats
  • The symptoms will show fast, within hours.


References : 1. CDC. Influenza (FLU) . People at High Risk of Developing Flu-Related Complication. Available at http://www.cdc.gov/flu/about/disease/high_risk.htm. Last accessed march 2017. 2. CDC. The Flu : A guide For Parents, Available at https://www.cdc.gov/flu/pdf/freresources/updated/fluguideforparents.pdf. Last accessed March 2017. 3. CDC. Influenza (FLU). What should you know and Do this Flu season if you are 65 years and Older. Available at http://www.cdc.gov/flu/about/ disease /65over.htm.