What causes the Flu?

The flu, or influenza, is caused by a virus. Specifically, it is most commonly associated with the influenza viruses A and B, which are responsible for seasonal outbreaks. Understanding that the flu is viral in nature is crucial, as it distinguishes it from bacterial infections that require antibiotics for treatment.

While bacteria can cause numerous illnesses, including respiratory infections, they are not the causative agents of influenza. Spoiled food can lead to food poisoning or gastrointestinal diseases, but it is unrelated to the flu. Additionally, not dressing warmly in cold weather does not lead to the flu; rather, the virus spreads from person to person, often in colder months when people gather indoors. Recognizing the viral cause of the flu helps in understanding appropriate preventive measures, such as vaccination and hygiene practices.