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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.
Mar 27, 2024 · COVID-19, also called coronavirus disease 2019, is an illness caused by a virus. The virus is called severe acute respiratory syndrome coronavirus 2, or more commonly, SARS-CoV-2. It started spreading at the end of 2019 and became a pandemic disease in 2020. Coronavirus Enlarge image.
Nov 8, 2023 · Viruses cause familiar infections such as the common cold, but they also cause severe illnesses. Learn more about viral infections and their symptoms.
Aug 23, 2023 · Viral infections are a part of life, and we are all at risk to get one at some point in our lives. Some can be as mild as the common cold, while others can be life-threatening. Viruses can spread rapidly, so it's important to minimize the risk of transmission if you find yourself sick with a virus.
A virus is a small infectious organism—much smaller than a fungus or bacterium—that must invade a living cell to reproduce (replicate). The virus attaches to a cell (called the host cell), enters the cell, and releases its DNA or RNA inside the cell.
Mar 29, 2023 · What is a virus? Viruses are small germs (pathogens) that can infect you and make you sick. They can infect humans, plants, animals, bacteria and fungi. Each one infects only specific types of hosts. Viral infections in humans can cause no symptoms or make you extremely ill. Types of diseases they can cause include: Respiratory illnesses.
Feb 17, 2023 · A virus is a tiny non-living microbe. It must infect a cell to make copies of itself inside. They have a genome of DNA or RNA inside a shell of proteins. Some of them also have a layer of fats around the protein shell. Viruses infect humans, animals, plants, bacteria, amoeba, and fungi.
Aug 21, 2018 · We’ll go over some of the main types, including how they’re spread, treated, and prevented. We’ll also list examples of each type of viral disease.
Dec 18, 2023 · There are several types of viral infections, each of which can affect your body differently. Learn more about the symptoms, causes, and treatments.
4 days ago · British researchers now think the reason could be a specific gene that gives the immune system advance warning to destroy viral invaders quickly. COVID-19 has infected hundreds of millions ...
