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  2. Coronavirus - Wikipedia

    en.wikipedia.org/wiki/Coronavirus

    The human coronavirus NL63 shared a common ancestor with a bat coronavirus (ARCoV.2) between 1190 and 1449 CE. [76] The human coronavirus 229E shared a common ancestor with a bat coronavirus (GhanaGrp1 Bt CoV) between 1686 and 1800 CE. [77] More recently, alpaca coronavirus and human coronavirus 229E diverged sometime before 1960. [78]

  3. Virus - Wikipedia

    en.wikipedia.org/wiki/Virus

    Bacteria also contain a system that uses CRISPR sequences to retain fragments of the genomes of viruses that the bacteria have come into contact with previously, which allows them to block the virus's replication through a form of RNA interference. [188] [189] This genetic system provides bacteria with acquired immunity to infection. [190]

  4. Coronavirus diseases - Wikipedia

    en.wikipedia.org/wiki/Coronavirus_diseases

    Coronavirus diseases are caused by viruses in the coronavirus subfamily, a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal.

  5. Coronavirus or influenza? Bacteria or fungi? Experts share ...

    www.aol.com/lifestyle/coronavirus-influenza...

    Coronaviruses: These respiratory viruses are responsible for the COVID-19 pandemic as well as other diseases including MERS, which was first reported in 2012, and SARS, which caused a global ...

  6. Introduction to viruses - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_viruses

    A related coronavirus emerged in Wuhan, China, in November 2019 and spread rapidly around the world. Thought to have originated in bats and subsequently named severe acute respiratory syndrome coronavirus 2, infections with the virus cause a disease called COVID-19, that varies in severity from mild to deadly, [69] and led to a pandemic in 2020.

  7. Medical microbiology - Wikipedia

    en.wikipedia.org/wiki/Medical_microbiology

    Medical microbiology, the large subset of microbiology that is applied to medicine, is a branch of medical science concerned with the prevention, diagnosis and treatment of infectious diseases. In addition, this field of science studies various clinical applications of microbes for the improvement of health.

  8. SARS-CoV-1 - Wikipedia

    en.wikipedia.org/wiki/SARS-CoV-1

    Scanning electron micrograph of SARS virions. Severe acute respiratory syndrome (SARS) is the disease caused by SARS-CoV-1. It causes an often severe illness and is marked initially by systemic symptoms of muscle pain, headache, and fever, followed in 2–14 days by the onset of respiratory symptoms, [13] mainly cough, dyspnea, and pneumonia.

  9. Evolution of bacteria - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_bacteria

    Bacteria are prokaryotic microorganisms that can either have a bacilli, spirilli, or cocci shape and measure between 0.5-20 micrometers. They were one of the first living cells to evolve [9] and have spread to inhabit a variety of different habitats including hydrothermal vents, glacial rocks, and other organisms.