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  2. File : SARS-CoV-2 scanning electron microscope image.jpg

    en.wikipedia.org/wiki/File:SARS-CoV-2_scanning...

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  3. Portal:Viruses - Wikipedia

    en.wikipedia.org/wiki/Portal:Viruses

    Hepatitis delta virus or hepatitis D virus (HDV) is a small virusoid, the sole member of the Deltavirus genus. It infects humans. It infects humans. A subviral satellite , it can only replicate in the presence of a hepatitis B (HBV) helper virus .

  4. Adenovirus infection - Wikipedia

    en.wikipedia.org/wiki/Adenovirus_infection

    Adenovirus infection is a contagious viral disease, caused by adenoviruses, commonly resulting in a respiratory tract infection. [1] [9] Typical symptoms range from those of a common cold, such as nasal congestion, rhinitis, and cough, to difficulty breathing as in pneumonia. [9]

  5. Coronavirus - Wikipedia

    en.wikipedia.org/wiki/Coronavirus

    The virus can spread to different organs throughout the chicken. [131] The virus is transmitted by aerosol and food contaminated by feces. Different vaccines against IBV exist and have helped to limit the spread of the virus and its variants. [127] Infectious bronchitis virus is one of a number of strains of the species Avian coronavirus. [133]

  6. Virus - Wikipedia

    en.wikipedia.org/wiki/Virus

    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 archaea.

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  8. Viral pneumonia - Wikipedia

    en.wikipedia.org/wiki/Viral_pneumonia

    Viral pneumonia is a pneumonia caused by a virus.Pneumonia is an infection that causes inflammation in one or both lungs. The pulmonary alveoli fill with fluid or pus making it difficult to breathe. [1]

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