PATHOLOGY

Detailed explanation-1: -What is the flu (influenza)? The flu is an illness you get from the influenza virus. It causes symptoms like head and body aches, sore throat, fever and respiratory symptoms, which can be severe.

Detailed explanation-2: -The flu is caused by an influenza virus. Most people get the flu when they breathe in tiny airborne droplets from the coughs or sneezes of someone who has the flu. You can also catch the flu if you touch something with the virus on it, and then touch your mouth, nose, or eyes.

Detailed explanation-3: -Flu and flu-like illnesses share many of the same symptoms. Symptoms of the flu include congestion, cough, headache, body aches, fatigue, fever and chills.