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History of Coronavirus


History of Coronavirus Discovery:
 
    Coronaviruses were first discovered in the 1930s when an acute respiratory infection of domesticated chickens was shown to be caused by infectious bronchitis virus. Arthur Schalk and M.C. Hawn described in 1931 a new respiratory infection of chickens in North Dakota. The infection of new-born chicks was characterized by gasping and listlessness. In the 1940s, two more animal coronaviruses, mouse hepatitis virus (MHV) and transmissible gastroenteritis virus (TGEV), were isolated.
     
    The history of human coronaviruses began in 1965 when Tyrrell and Bynoe found that they could passage a virus named B814. It was found in human embryonic tracheal organ cultures obtained from the respiratory tract of an adult with a common cold.
 
         In the above article delivered the following details:
  1. History
  2. Emergence of the severe acute respiratory syndrome (sars) coronavirus
  3. Coronavirus genome and structure
  4. Newly identified group i human coronaviruses
  5. Newly identified group ii human coronaviruses
        

         In the below article was published on 1969, in this article they were summarized the isolated from various human common cold epidemics which resemble avian infectious bronchitis virus (IBV) so much, both morphologically and in other properties, that they have been called IBV-like viruses. It has also been found that the mouse hepatitis virus is morphologically identical with them.

        The nucleocapsid structure of these viruses is still unknown. Because of the characteristic appearance, recalling the solar corona, the name coronaviruses has been suggested. Besides avian infectious bronchitis virus and mouse hepatitis virus, this virus group at present includes five IBV-like human strains: B814, 229E, OC43, LP, and EVS.

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