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Nov 23, 2022 · Viral infections are any illness you get from a virus (a small germ that uses your cells to reproduce). Common viral illnesses include colds, the flu, COVID-19, norovirus (“stomach flu”), HPV (warts) and herpes simplex virus (cold sores). Many viruses go away on their own, but some cause life-threatening or chronic illnesses.
Dec 18, 2023 · The symptoms of a viral infection will depend on which part of your body is infected—which may affect your lungs, skin, brain, digestive tract, and more.
A virus is composed of nucleic acid, either DNA or RNA, surrounded by a protein coat. It requires a living cell in which to multiply. A viral infection can lead to a spectrum of symptoms from asymptomatic (no overt symptoms) to severe disease. People may get viruses by swallowing or inhaling them, by being bitten by insects, through sexual ...
Mar 27, 2024 · Critical COVID-19 illness means the lung and breathing system, called the respiratory system, has failed and there is damage throughout the body. Rarely, people who catch the coronavirus can develop a group of symptoms linked to inflamed organs or tissues. The illness is called multisystem inflammatory syndrome.
Nov 8, 2023 · The symptoms can range from mild to very severe. Other times, your immune system may be able to fight it off and you may not have any symptoms. Each different virus usually only infects one type of cell in your body. For example, hepatitis viruses affect the cells in the liver. HIV infects a certain type of immune system cell.
Nov 20, 2020 · The symptoms of viral diseases can affect almost any area of the body or body system. Symptoms of viral diseases can include: Flu-like symptoms ( fatigue, fever, sore throat, headache, cough, aches and pains) Gastrointestinal disturbances, such as diarrhea, nausea and vomiting. Irritability. Malaise (general ill feeling) Rash.
Feb 17, 2023 · Symptoms of a viral infection include fever, pain, nausea, diarrhea, cough, congestion, shortness of breath, rashes, warts, and many others. The best treatment for most everyday viruses is rest, hydration, and time. In some cases, antivirals may help speed healing. Vaccines can prevent some viral infections.
