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Bookmark or Share- Viruses: Definition, Types, Characteristics & Facts - Cleveland ClinicViruses 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:
- Viruses: What are they, and what do they do? - Medical News TodaySummary. Viruses are microscopic particles that are present in animals, plants, and other living organisms. They can sometimes cause diseases, such as the flu and COVID-19. Viruses are...
- virus | Learn Science at Scitable - NatureA virus is an infectious agent that can only replicate within a host organism. Viruses can infect a variety of living organisms, including bacteria, plants, and animals. Viruses are so small...
- Intro to viruses (article) | Viruses | Khan AcademyKey points: A virus is an infectious particle that reproduces by "commandeering" a host cell and using its machinery to make more viruses. A virus is made up of a DNA or RNA genome inside a protein shell called a capsid. Some viruses have an external membrane envelope. Viruses are very diverse.
- Viruses - National Geographic SocietyViruses are microscopic biological agents that invade living hosts and infect their bodies by reproducing within their cell tissue. Photograph by Maryna Olyak. Article. Vocabulary. Viruses are tiny infectious agents that rely on living cells to multiply. They may use an animal, plant, or bacteria host to survive and reproduce.
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