Bacterial vs. viral infections: How do they differ? - Mayo Clinic
Nov 25, 2025 · Viruses that become resistant to antivirals have affected treatment, including for genital herpes, HIV and, in 2008, for influenza (flu). Treating and preventing bacterial and viral …
Germs: Protect against bacteria, viruses and infections
Mar 5, 2024 · Viruses are responsible for causing many diseases, including: Common cold. Influenza. Measles. Chickenpox and shingles. Coronavirus disease 2019, also called COVID …
Influenza (flu) - Symptoms and causes - Mayo Clinic
Dec 19, 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 …
Debunking COVID-19 myths - Mayo Clinic
Oct 24, 2025 · No. Viruses can only spread between living beings and can't travel on radio waves and mobile networks. Most often, this myth calls out 5G mobile networks. But the COVID-19 …
Viral gastroenteritis (stomach flu) - Mayo Clinic
Apr 30, 2025 · Viral gastroenteritis is an intestinal infection that includes signs and symptoms such as watery diarrhea, stomach cramps, nausea or vomiting, and sometimes fever. The …
Coronavirus: What is it and how can I protect myself?
Oct 24, 2025 · Coronavirus disease 2019 (COVID-19) is caused by a virus that spreads between people. Find out how to protect yourself and those close to you.
Human metapneumovirus (HMPV): Symptoms and prevention
Feb 19, 2025 · Human metapneumovirus (HMPV) is a seasonal virus that causes respiratory illness worldwide. Explore symptoms and ways to prevent infection.
COVID-19 vs. flu: Similarities and differences - Mayo Clinic
Oct 22, 2025 · Coronavirus disease 2019 (COVID-19) and seasonal flu have many similarities and differences. Find out what to know and how to protect yourself from these diseases.
Common cold - Symptoms and causes - Mayo Clinic
May 24, 2023 · Germs called viruses cause a common cold. Often, adults may have two or three colds each year. Infants and young children may have colds more often. Most people recover …
Medical Diseases & Conditions - Mayo Clinic
Explore comprehensive guides on hundreds of common and rare diseases and conditions from the experts at Mayo Clinic.