What is Influenza (Flu)? Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can lead to death. The best way to prevent flu is by getting a flu vaccine each year.
Are colds viruses or bacteria?
The common cold is a viral infection of your nose and throat (upper respiratory tract). It’s usually harmless, although it might not feel that way. Many types of viruses can cause a common cold. Healthy adults can expect to have two or three colds each year.
Here are 12 tips to help you recover more quickly.
- Stay home. Your body needs time and energy to fight off the flu virus, which means that your daily routine should be put on the backburner. …
- Hydrate. …
- Sleep as much as possible. …
- Ease your breathing. …
- Eat healthy foods. …
- Add moisture to the air. …
- Take OTC medications. …
- Try elderberry.
Are viruses living?
Viruses are not living things. Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things.
Can a cold virus turn into a bacterial infection?
In some cases, a secondary bacterial infection may develop during or following a cold. Common examples of secondary bacterial infections include: sinus infections.
Is strep throat caused by a virus?
Viruses are the most common cause of a sore throat. However, strep throat is an infection in the throat and tonsils caused by bacteria called group A Streptococcus (group A strep).
What kills the flu virus in the body?
Fever—Fevers fight influenza viruses.
Because viruses are sensitive to temperature changes and cannot survive above normal body heat, your body uses fever to help destroy them.
How do you know when flu is serious?
In adults, symptoms of life-threatening flu complications include:
- feeling short of breath.
- trouble breathing.
- feeling suddenly dizzy.
- abdominal pain that is severe.
- pain in the chest.
- severe or ongoing vomiting.
How long is flu contagious?
Period of Contagiousness
People with flu are most contagious in the first 3-4 days after their illness begins. Some otherwise healthy adults may be able to infect others beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick.