How to decontaminate an object?
Tests on different disinfection solutions show that agents based on ethanol, hydrogen peroxide or sodium hypochlorite are effective against coronavirus.
For us, the simplest and most effective method of decontamination is “cleaning with soap and water followed by a rinse (either a no-rinse application of white vinegar, or a no-rinse application of 1/15th chlorinated water – obtained by mixing one volume of bleach with 2.6% active chlorine with 14 volumes of water at room temperature); or by applying alcohol called “household”.
But there is another, more radical solution: “the sequestration of mobile objects to wait for the spontaneous inactivation of the viruses. A 24-hour confinement is almost always sufficient,” says the expert.
CORONAVIRUS: WHERE YOU ARE MOST LIKELY TO CATCH IT
If the Coronavirus seemed to be under control in China, it is progressing at a lightning speed in other countries such as Italy, where hundreds of people are now infected. Schools, bars and discos were closed in several cities. Public transport, school, supermarket
CORONAVIRUS: HOW IS THE VIRUS TRANSMITTED?
The first cases identified were people who had gone directly to the Wuhan market [closed since January 1, editor’s note]: the hypothesis of a zoonosis (disease transmitted by animals) is therefore favored. Human-to-human transmission is now proven”, says the platform set up by the French government, dedicated to the coronavirus. The incubation period is 14 days maximum.
All respiratory infectious microorganisms (whether bacterial or viral), are transmitted by microdroplets (G). In addition, five microorganisms can be transmitted by airborne microparticles (A): measles, varicella and shingles viruses, coronaviruses, tubercle bacillus and leprosy bacillus.
In the case of respiratory transmission, it is the microdroplets also called droplets (symbol G) that contaminate,” adds Professor Gayet. As their name indicates, they are invisible because they are microscopic. Their diameter ranges from 5 to 150 microns or thousandths of a millimeter”.
“Microdroplets (G) have a maximum range of 1.5 to 2 meters. They are dense and fall very quickly, not being able to remain suspended in the air for long, except in the case of very dry air”, warns the expert. They contaminate people by impacting on their eyes, nostrils and lips. They can also impact on their cheeks and then be moved to a facial mucosa by a finger.
“Airborne microparticles (A) have a range of several meters. They are very low density, light and remain suspended in the air for a long time (several hours)”.