A bacterial infection is an infection caused by bacteria. Bacterial infections can often be treated successfully with antibiotics.
An infection may begin as a bacterial infection. Or a bacterial infection may follow a viral infection that does not get better. When a viral infection doesn't get better for 10 days or more, or when a viral infection starts to improve and then unexpectedly gets worse, a bacterial infection may be more likely.
A bacterial infection usually affects a single area in the body, such as the sinuses, lungs, ears, or urinary tract. Common bacterial infections include sinusitis, pneumonia, strep throat, ear infections, and bladder infections. If untreated, a bacterial infection can spread to the bloodstream. This condition is called bacteremia.
Current as of: November 14, 2014
Author: Healthwise Staff
Medical Review: E. Gregory Thompson, MD - Internal Medicine & Anne C. Poinier, MD - Internal Medicine & Robert L. Cowie, MB, FCP(SA), MD, MSc, MFOM - Pulmonology
Public health alerts include information about outbreaks, advisories and product recalls. Click on the links below to read the most recent alerts, or visit our Public Health Alerts web page.
If you are looking for health services in your community, you can use our directory to FIND hospitals, clinics, and other resources.
To learn more, visit Healthwise.org
© 1995-2015 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
If you or someone in your care has chest pains, difficulty breathing, or severe bleeding, it could be life-threatening. Call 9-1-1 or the local emergency number immediately. If you are concerned about a possible poisoning or exposure to a toxic substance, call Poison Control now at 1-800-567-8911.