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  1. Virus - Wikipedia

    A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. [1] Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and …

  2. Viruses: Definition, Types, Characteristics & Facts

    Mar 29, 2023 · Viruses are small germs that have to infect a host — like humans, animals, plants — to reproduce. Learn more about types of viruses and how they work.

  3. Virus | Definition, Structure, & Facts | Britannica

    May 1, 2026 · Virus, infectious agent of small size and simple composition that can multiply only in living cells of animals, plants, or bacteria. Viruses possess unique infective properties and thus often cause …

  4. Andes Virus Outbreak on a Cruise Ship: Current Situation

    1 day ago · Current situation CDC is responding to a deadly hantavirus outbreak on a cruise ship in the Atlantic Ocean, reported on May 2, 2026. The type of hantavirus responsible for this outbreak is the …

  5. What is the Andes virus? The hantavirus linked to a cruise ship ...

    May 7, 2026 · The strain of hantavirus that has killed three people and sickened five others on a cruise ship is the Andes strain, which is typically found in South America.

  6. Virus - National Human Genome Research Institute

    2 days ago · Virus. Well, we all have learned a lot more about viruses in the last two years with the Covid-19 outbreak/global pandemic. Viruses infect humans. But, in fact, viruses infect many …

  7. VirusTotal - Home

    VirusTotal Assistant Bot offers a platform for users to interact with VirusTotal's threat intelligence suite and explore artifact-related information effectively.

  8. What Is a Virus? Definition, Structure, and How Viruses Work

    Apr 12, 2025 · A virus is a microscopic infectious agent composed of genetic material—either DNA or RNA—enclosed within a protein coat known as a capsid. Some viruses also possess an outer lipid …

  9. Virology - Wikipedia

    Gamma phage, an example of virus particles (visualised by electron microscopy) Virology is the scientific study of biological viruses. It is a subfield of microbiology that focuses on their detection, …

  10. VIRUS Definition & Meaning - Merriam-Webster

    Jun 2, 2026 · The meaning of VIRUS is any of a large group of submicroscopic infectious agents that are usually regarded as nonliving extremely complex molecules, that typically contain a protein coat …