The coronavirus (Latin word, meaning «crown virus »), or CoV, is a ARN single-stranded virus corresponding to the subfamily of Orthocoronaviridae. These are enveloped viruses, consisting of a viral envelope surrounding a helically symmetric nucleocapsid.
The coronaviruses that can infect human beings are : 229E, NL63, OC43, and HKU1.
SRAS is also a coronavirus. The severe acute respiratory syndrome (SARS, in French SRAS, syndrome respiratoire aigu sévère) has a unique pathogenesis, since it causes lower and upper respiratory tract infections, and the possibility of a gastroenteritis. In adult humans, a significant percentage of common colds are ascribed to the coronavirus, especially in winter or early spring. A person with health problems will have a harder time healing than a healthy person.
Wuhan’s Pneumonia. A new form of respiratory syndrome, similar to SARS, appeared in Wuhan (Hubei Province, China) in early December 2019. Wuhan’s pneumonia is caused by a new coronavirus, six genomes of which have been reported to the international scientific community. In January 2020, the virus was named 2019-nCoV.
The disease appeared in customers at the Wuhan fish market (where are also sold birds snakes and rabbits). It is of animal origin and is spread among human beings.
The coronavirus is viral by nature, and this takes away the effectiveness of antibiotic or antibacterial treatments intended for bacterial infections.
In contact with water and the surfactants of a soap (for example) or other products such as ammoniums (charged surfactants), which are chemically close to the lipids of the coronavirus membrane, a physicochemical reaction occurs leading to the destruction of the virus envelope.
What about alcohol?
Present in at least 60%, it deteriorates the proteins of the virus crown and also weakens the cohesion of the membrane, because alcohol is less “repellent” to this envelope than water. Pall Thordarson, head of the Department of Chemistry at the University of New South Wales (Australia), explains that “both hydroalcoholic gels and soap are effective”.
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