
Bacterial vs. viral infections: How do they differ? - Mayo Clinic
Nov 25, 2025 · Treating and preventing bacterial and viral infections In some cases, it can be hard to figure out if a bacterial infection or a viral infection is causing your symptoms. Both infections can …
Infectious diseases - Diagnosis & treatment - Mayo Clinic
Apr 8, 2025 · Viruses, bacteria, fungi and parasites all can cause infections. Find out more about how to prevent and treat these conditions.
Infectious diseases - Symptoms & causes - Mayo Clinic
Apr 8, 2025 · Viruses, bacteria, fungi and parasites all can cause infections. Find out more about how to prevent and treat these conditions.
Staph infections - Symptoms & causes - Mayo Clinic
Dec 16, 2025 · Staph infections that spread to the bloodstream, organs or medical devices can cause serious illness, such as pneumonia or sepsis, and even death. Medical devices infected with staph …
Germs: Protect against bacteria, viruses and infections
Mar 5, 2024 · Learn how to protect against bacteria, viruses and infections.
Antibiotics: Are you misusing them? - Mayo Clinic
Apr 9, 2024 · Antibiotics are important drugs. Many antibiotics can successfully treat infections caused by bacteria (bacterial infections). Antibiotics can prevent the spread of disease. And antibiotics can …
Bacterial vaginosis - Symptoms and causes - Mayo Clinic
Jun 10, 2023 · Bacterial vaginosis doesn't cause complications very often. But sometimes, having BV may lead to: Sexually transmitted infections. If you have BV, you have a higher risk of getting an STI. …
Helicobacter pylori (H. pylori) infection - Symptoms & causes - Mayo …
Dec 16, 2025 · A Helicobacter pylori infection is a common stomach infection. It's caused by a germ called Helicobacter pylori, a bacteria also known as H. pylori. More than half the people in the world …
Cellulitis - Symptoms & causes - Mayo Clinic
May 16, 2025 · Cellulitis (sel-u-LIE-tis) is a spreading skin infection, most commonly of the lower leg. It's caused by bacteria entering through a break in the skin. The affected skin is swollen, painful and …
Ear infection (middle ear) - Symptoms & causes - Mayo Clinic
Apr 23, 2025 · Untreated infections or infections that don't respond well to treatment can spread to nearby tissues. Rarely, an ear infection can cause infection of the bony section behind the ear, …