Mar 5, 2024 · Learn how to protect against bacteria, viruses and infections.

Apr 8, 2025 · Viruses. These microscopic germs are even smaller than bacteria. They cause many diseases, including the common cold, COVID-19 and HIV. Fungi. These cause many skin diseases, …

Nov 25, 2025 · Bacteria cause bacterial infections. Viruses cause viral infections. Antibiotic medicines kill or keep many bacteria from growing but don't treat viruses. Antiviral medicines help the body …

Apr 8, 2025 · Some types of bacteria are especially prone to certain classes of antibiotics. Treatment can be targeted more precisely if your healthcare team knows what type of bacteria you're infected with.

Apr 23, 2024 · Viruses aren't the only vectors that can be used to carry changed genes into your body's cells. Other vectors being studied in clinical trials include: Stem cells. All cells in your body are …

May 16, 2024 · In those for whom a cause is found, there are two main types of encephalitis: Infectious encephalitis. This condition usually occurs when a virus infects the brain. The infection may affect …

Dec 6, 2025 · Influenza viruses are constantly changing, with new strains appearing often. A person's first flu infection gives some long-term protection against similar strains of flu. But the vaccines …

Dec 6, 2025 · Diagnosis Flu vaccines at Mayo Clinic Mayo Clinic offers flu shots in Arizona, Florida and Minnesota. Learn more about how to get your flu shot at Mayo Clinic. To diagnose the flu, also called …

Jun 13, 2020 · The most common are bacteria and viruses in the air we breathe. Your body usually prevents these germs from infecting your lungs. But sometimes these germs can overpower your …

Jul 18, 2024 · COVID-19 diagnostic testing shows current infection with the virus that causes coronavirus disease 2019 (COVID-19). The U.S. Food and Drug Administration (FDA) approved the …