Flu: Meaning, Diagnosis and Overview

What is Flu?

The flu is an infection of the respiratory tract (nose, throat, and lungs). It spreads easily.

Recovery Time

Most people recover completely within two to seven days.  An irritating cough may persist for a week or so after other symptoms have gone.


Diagnosis is done based on the physical examination of symptoms. There is a test to detect the flu. It is done by swabbing the nose or throat it is recommended very rarely.

FAQs prepared by doctor

1. What is flu?
The flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs.

2. When shall one visit a physician?
One shall meet doctor if rashes, bluish skin coloration, ear pain or diarrhea occurs

3. What are the complications of flu?
Complications of flu include high fever, or fever with a rash, trouble breathing or rapid breathing, bluish skin color and aching muscles, especially in your back, arms and legs

4. How does one prevent flu?
One can prevent flu by vaccinating themselves. Wash your hands thoroughly and frequently with soap, especially after using the bathroom, after coughing or sneezing, and before eating. Never pick up used tissues. Never share cups and eating utensils. Cover your mouth and nose with a tissue when you cough or sneeze.

5. Why do I need to receive the flu vaccine every year?
A flu vaccine is needed every year because flu viruses are constantly changing. It is not unusual for new flu viruses to appear each year. The flu vaccine is adjusted each year to keep up with the flu viruses as they change. Also, multiple studies conducted over different seasons and across vaccine types and influenza virus subtypes have shown that the bodys immunity to influenza viruses (acquired either through natural infection or vaccination) declines over time. Getting immunized each year provides the best protection against influenza throughout flu season.

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