A viral infection is caused by a virus and is often the cause
of minor illness, such as a cold or the stomach flu. A viral infection usually
causes many different symptoms that often come on quickly (over hours to a day
or two) without prior illness.
Viral infections that cause minor
illnesses are usually not serious and go away without medical treatment. Home
treatment can relieve the symptoms of colds and stomach flu and prevent
problems, such as dehydration. Antibiotics are not used to treat a viral
illness and will not help cure a viral illness.
Some immunizations
can prevent viral infections, including influenza (flu), chickenpox, and
measles. Good hygiene and avoiding close contact with sick people can also help
prevent infection.
