Coronaviruses were isolated in 1965, but their understanding of them is currently limited. 50% of children aged 5 to 9 can detect neutralizing antibodies, and 70% of adults are neutralizing antibodies. The rhinovirus was discovered in the 1950s. The rhinovirus was first found to be associated with a cold, but only about 50% of colds are caused by rhinoviruses. In 1965, Tyrrell and other human trachea culture methods, from the common cold patient nasal lotion isolated a virus, named B814 virus.
Subsequently, Hamre et al. isolated human embryonic kidney cells into a similar virus, which represents a strain named 229E virus. IIn 1967, Mclntosh and other human trachea culture isolated from cold patients to a batch of viruses, the representative strain is OC43 strains. In 1968 , Almeida and others conducted morphological studies of these viruses , and electron microscopes observed that they had coronal-like echidnas on their envelopes , so they proposed to name these viruses as coronaviruses . In 1965, Tyrrell and Bynoe first developed a coronavirus using the embryo's fibrous trachea tissue, which is visible under an electron microscope as a coronal outer corona, and is therefore known as coronaviridae.
In 1975, the Viral Naming Commission officially named the Coronary Virus Section. Two coronaviruses are known to affect humans, and two-thirds of premature babies are infected with common colds and respiratory tracts. It is now known that the coronary virus department only infects vertebrates and is associated with many diseases in humans and animals. Since the first International Coronary Virus Seminar was held in Germany in 1980, it has received more and more attention from medical, veterinary and molecular biology.
These viruses have gastrointestinal, respiratory, and nervous system addictions. Coronavirus infection in children is not common.
History
In 1937, the coronavirus was first isolated from chickens.
In 1965, the first human coronavirus was isolated. It is known as the "coronavirus" because it can be observed under an electron microscope that has a clear protrusion of rod-like particles on its outer membrane, making it look like the crown of medieval European emperors.
In 1975, the National Committee for the Naming of Viruses officially named the Coronary Virus Section. According to the serological characteristics of the virus and the differences in nucleotide sequences, the coronavirus family is divided into coronavirus and cyclovirus two genus. The representative strain of the coronary virology department is avian infectious bronchitis virus (Avian infectious bronchitis virus, IBV).
Between the winter of 2002 and the spring of 2003, the virus that caused severe acute respiratory syndrome (Severe Acute Respiratory Syndrome( SARS, Severe Acute Respiratory Syndrome) that ravaged the world was one of the genus coronaviruses.
In 2011, the International Committee on Virus Classification (The International Committee on Classification of Viruses) in its ninth report classified the coronavirus into alpha, beta, gamma, and a newly assumed genus, namely, the four genus of the coronavirus. S.A.
In September 2012, a new type of coronavirus was found in Saudi Arabia and has not yet been found an effective cure for the disease because it is the same as SARS virus. However, the Saudi Ministry of Health website provides measures to prevent the disease, respectively, hand washing frequently, often open windows, avoid direct contact with the hands of eyes, nose and mouth, minimize access to crowded areas, etc.
On September 27, 2012, the World Health Organization (WHO) issued a new coronavirus defense guide to 194 member countries and called on global health agency personnel to report all cases of acute respiratory infections traveling to Saudi Arabia or Qatar.
In a health guide issued to 194 member states, the World Health Organization says health workers should be vigilant for patients with acute respiratory conditions and who have been to the site of a new virus discovery or have been exposed to suspected and confirmed cases in the past 10 days. Infected patients may also be accompanied by fever (body temperature above 38 degrees Celsius) and cough symptoms, and require hospitalization.
In 2014, Hong Kong health experts ruled out any link to influenza A and influenza B viruses, nor was it linked to the H5N1 avian influenza virus that emerged in 1997.
At the end of 2019, the new coronavirus, which caused the outbreak in Wuhan, was named 2019-nCoV. (S.A.)
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