Influenza, commonly known as the flu, is a highly contagious viral infection of the respiratory tract. It is caused by the influenza virus and can be dangerous, even fatal, if not treated.
While the flu can be mild in some cases, in other cases it can cause serious health complications, such as pneumonia, bronchitis, or even death. The flu is especially dangerous for young children, pregnant women, people with weakened immune systems, and the elderly.
The symptoms of the flu include fever, sore throat, cough, body aches, headache, chills, and fatigue. It can also cause vomiting and diarrhea in some cases. The flu is different from a cold, which is usually less severe and shorter in duration.
In some cases, influenza can be fatal. People with underlying health conditions such as asthma, diabetes, or heart disease are at an increased risk of serious complications from the flu, which can lead to death. The Centers for Disease Control and Prevention (CDC) estimates that between 3,000 and 49,000 people die from influenza each year in the United States.
The best way to prevent the flu is to get a yearly flu vaccine. It is also important to practice good hygiene, such as washing your hands frequently and avoiding close contact with people who are sick. If you do get the flu, it is important to seek medical attention right away, as antiviral medications can help to reduce the severity of the symptoms.