Corona viruses are a group of viruses that cause diseases of mammals and birds. In humans, the virus causes respiratory infections that include colds, usually mild and rarely fatal, such as severe acute respiratory syndrome, respiratory syndrome from the Middle East and the new Corona virus, which caused the outbreak of the new Corona virus 2019- 2020. It can cause diarrhea in cows and pigs, while in chicken it can cause diseases of the upper respiratory tract. There are no approved vaccines or antivirals to prevent or treat these viruses.
Corona viruses belong to the coranavid family straight within the coronavirus family, on the eve of viruses. Corona viruses are viruses coated with the positive directional single chain RNA genome and the capsule has a similar helical nucleus. The genomes of the Corona Virus genome are approximately 26 to 32 km base and are the largest of the RNA viruses.
The term Corona virus means crown or aura. The name refers to the distinctive aspect of virions (the infectious form of the virus) that appears through the electron microscope, as it has fungi / villi of large bulbous surface protrusion, showing them in the form of a crown of kings or a solar halo. This morphology occurs through the Follicular Fork (S) particles, which are proteins that fill the surface of the virus and determine host extraction.
Different proteins contribute to the general structure of all coronaviruses, which are the itch, the sheath, the membrane and the seed. In a specific case of coronavirus associated with SARS syndrome, a specific boundary domain of the receptor present in S acts as an intermediary for the virus to attach to its cellular receptor, angiotensin converting enzyme 2 (ACE2). The shorter itch is called hemostatic agglutination (HE).
In Arabic, the name Corona virus (1) is more popular than other nomenclatures, but other labels are more accurate in the description, as it is called: coronavirus, halo virus, truffle virus (or crowned virus), coronary fevers, coronary fevers, coronary fevers. snowy.
Crown viruses were discovered in the 1960s and the first viruses detected were the bronchitis virus in chickens and two cavities in the nasal cavity of human patients with a cold called HPV 229E and OC43. Since then, other elements of this family have been identified including: SKS virus in 2003 AD, HP NL63 virus in 2004 AD, HKU1 virus in 2005 AD, SK virus in 2012 AD. and new SK 2019M – nCoV virus, most of these viruses play a role in causing serious respiratory infections.
The Corona virus is a large group of viruses that primarily infect animals and can sometimes infect humans. The Corona virus is a type of virus that infects RNA in animals and humans, since it penetrates the group of cells and genes in them and the virus multiplies.
This coronavirus was launched from the Chinese city of “Wuhan”, where it had not previously appeared in it, and is now called (Covid 19).
“Corona viruses are a group of viruses that infect a wide range of different types of organisms including humans, livestock, pigs, chickens, dogs, cats and wild animals,” said Dr. Helena Meyer of the Berbright Institute.
Corona viruses are known to change from one species to another from time to time, as has happened in the case of SARS, Corona and coronaviruses, of the coronal type. These viruses are transmitted between humans by air, secretions or in contact with contaminated bodies, especially in winter.
The symptoms of this virus include fever, respiratory infections, cough, chest pain, sometimes labored breathing and digestive disorders. And it caused two types of “Corona” virus, serious and sometimes fatal epidemics for humans, the first of which is the SARS virus and caused a global epidemic that spread in 2003-2002, and bats were the source.
The second is respiratory syndrome in the Middle East, or the so-called “Mers” virus, first discovered in 2012 in the Middle East and in 2020 AD. the “emerging crown” virus has been identified in China. The “host” is expected to be a live animal sold in the animal market in the Chinese city of Wuhan, which is home to 11 million people. So the virus has mutated and passed on to humans, has adapted and is able to pass from person to person.
The virus incubation period is believed to be seven days and up to 14 days. As of now, there is no specific drug to fight these viruses, nor a vaccine against them. To stop the spread of this virus, several international airports have installed thermal cameras to measure the temperature of people from China, imposing a quarantine on people with a fever.