Flu: Symptoms, Contagiousness, Prevention & Treatment

how does the flu affect the respiratory system

Flu is a prevalent disease that leads to viral infection leading to fatal causes sometimes. According to standard statistical analysis, India faces about 10 million cases of flu per year where the victims are found with the affected nose, throat and lungs. However, how does the flu affect the respiratory system and where does the flu come from is always the question.

To understand the disease and its fatality, we need first to know where the flu comes from?

  • To understand the disease and its fatality, we need first to know where does the flu come from
  • Flu is a harmful disease that is contagious, spreads from one person to another.
  • Researchers say that it originates among birds and other animals.
  • Science has proved the presence of the virus, and it’s spread to winter.
  • It is an airborne disease that, when alive, becomes easier to victimize people by affecting their respiratory system.

What is a Flu?

The flu is not a cold. It is different. A cold can be caused by several viruses, while the flu can be caused only by the influenza virus. Influenza has got its type to cause the flu A, B and C.

A and B types of influenza are responsible for seasonal outbreaks, whereas type C affects the respiratory system through mild effect. Vaccines can protect type A and B, but sadly, there is no immunization to C.


One can pass on the virus to another person even before knowing it. 

  • The viral effect of the flu remains in the body in the first three to four days of the infection. 
  • A person with serious illness from the flu can affect the other person just within these three-four days. 
  • A person can even affect the other person in an adult even one day before the symptoms start to act. 
  • Children and other people who are not built up with an active immune system might affect others for a longer time.

Why Flu in Winter?

  • Winter being the season for indoors, the virus is accustomed to its nature. 
  • The virus likes it cold and indoor, hence having a longer life in winter. 
  • The air in winter is less humid inside the walls.
  • People do inhale it quickly as being inside the walls. 
  • Affects people via eyes, nose or mouth. 
  • Another reason crops up is due to close contact with each other during the cold season.

Symptoms of Flu

Flu is usually a self-assessed disease with the following symptoms-

  • Fever for three-four days with chills
  • The nose can be runny along with cough (can be dry or with phlegm) 
  • Suffers from headache 
  • Fatigue and nausea 
  • Muscles cramps 
  • Dehydration and flushing
  • Too much sweat
  • Lymph nodes can be swollen.
  • Pressure in chest 
  • Shortness of breath and sore throat

How Does the Flu Affect the Respiratory System?

Generally said flu affects the respiratory system. So now, the question is, how does the flu affect the respiratory system?

  • An influenza virus does contain protein which is harmful and effective in the human body. 
  • As recent research develops, the answer to how does the flu affects the respiratory system says that the protein in influenza acts as the divisional medium for it. 
  • It causes fluid build-up in the lungs. 
  • The fluid accumulation in the lungs makes it difficult for a person to breathe. 
  • Oxygen supply decreases through the bloodstream.

How to Avoid Flu?

  • Good habits should be in practice for proper and better health care.
  • Close contact to be avoided, especially during the winter season and with sick people.
  • When sick, stay home, wash your hands at regular intervals.
  • Cover up your mouth and nose.
  • Nose, eyes mouth are not to be touched frequently.
  • Baths are not to be skipped.
  • Intake of healthy food is to be maintained.
  • Food habit must involve proper consumption of protein, carbohydrates and other nutrients.
  • Vaccination is a bold step to avoid getting flu.
  • A healthy environment is to be maintained, and the damp and cold atmosphere is to be avoided.
  • Healthy fruits are to be consumed, mainly containing vitamin-e, such as strawberries, tomatoes, and citrus fruits such as grapes, oranges, lemons, limes.
  • Avoid doing stressful works such as workout.

Cure for Flu

Home Remedies for Flu Symptoms
  • Take a proper rest
  • Drink up a hot soup.
  • Eat filling up your stomach till the brim.
  • Vapour up to velar the vocal cords and your throat.
  • Breathe in fresh oxygen.
  • Feeling dizzy? Rub a warm cloth dipped in mild-warm water all over your face.
  • Gargling helps clear your throat, so why not spill and split.
  • Why not have a helping hand? A person to take care of at your worst.
  • Paracetamols are an effective remedy to fight the infection.
  • Flu treatments involve activity modification and fluid.
  • Tylenol and ibuprofen can be helpful.


Flu or influenza, if diagnosed, is to take care of with proper care and treatment. Ask Vaidya Online Consultation App for better instruction and guidance. Protect yourself and your loved ones. And do always remember prevention is better than cure.

Leave a comment

Your email address will not be published. Required fields are marked *

Get Online Consultation From Best Doctors

Ask Vaidya Has Launch

Covid Care Package

For Home Isolated Patients