Infection: Bacterial or viral? - Mayo Clinic
2023年2月4日 · Viruses. Viruses are bits of genetic information, either RNA or DNA, surrounded by protein. A virus needs a living host, such as a person, plant or animal. To spread, a virus …
Influenza (flu) - Symptoms and causes - Mayo Clinic
3 天之前 · 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 …
Hantavirus pulmonary syndrome - Symptoms & causes - Mayo Clinic
2022年1月7日 · Inhaling viruses — the most likely form of transmission — when they become airborne from disturbed rodent droppings or nesting materials; Eating food contaminated with …
Viral gastroenteritis (stomach flu) - Symptoms & causes - Mayo …
2022年1月18日 · You're most likely to get viral gastroenteritis when you eat or drink contaminated food or water. You may also be likely to get gastroenteritis if you share utensils, towels or food …
Coronavirus disease 2019 (COVID-19) - Symptoms and causes
These viruses cause illnesses such as the common cold, severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS) and coronavirus disease 2019 (COVID …
Common cold - Symptoms and causes - Mayo Clinic
2023年5月24日 · Many viruses can cause a common cold. Rhinoviruses are the most common cause. A cold virus enters the body through the mouth, eyes or nose. The virus can spread by: …
HPV infection - Symptoms & causes - Mayo Clinic
2021年10月12日 · HPV infection is a viral infection that commonly causes skin or mucous membrane growths (warts). There are more than 100 varieties of human papillomavirus (HPV).
Diarrhea - Symptoms and causes - Mayo Clinic
2024年8月3日 · Viruses. Viruses that can cause diarrhea include Norwalk virus, also known as norovirus, enteric adenoviruses, astrovirus, cytomegalovirus and viruses that cause hepatitis. …
Bell's palsy - Symptoms and causes - Mayo Clinic
2024年3月15日 · Although the exact reason Bell's palsy occurs isn't clear, it's often related to having a viral infection. Viruses that have been linked to Bell's palsy include viruses that …
Respiratory syncytial virus (RSV) - Symptoms & causes - Mayo Clinic
2023年10月4日 · Because RSV and coronavirus disease 2019 (COVID-19) are both types of respiratory viruses, some symptoms of RSV and coronavirus disease 2019 (COVID-19) can …