Flu is a viral infection that is spread from person to person in secretions of the nose and lungs, for example when coughing and sneezing.

This ailment can leave most people sick for a few days, but it can be a much more serious ordeal if someone is already suffering from heart disease. It puts more stress on the heart as the heart has to work harder to pump blood through the lungs.

In fact, flu can cause serious complications, including bacterial pneumonia, or the worsening of chronic heart problems.

Flu season begins in October and typically runs until early to mid-spring. Though many people confuse colds and upper-respiratory infections with the flu, the symptoms of real flu are usually more severe.

It can cause fever, chills, cough, sore-throat, a runny or stuffy nose, muscle or body aches, headaches and fatigues. Vomiting and diarrhea associated with the flu is more common in children.

General public should be educated to combat this contagious illness, which is sometimes life-threatening. Annual flu vaccine is recommended for patients suffering from cardiovascular diseases.

Washing hands frequently and keeping hands away from face is a good safety practice.

One should stay away from people who are sick and stay out of crowds if flu is spreading through the community.

DR. DAYA RAM Karachi