SARS-CoV-2 COVID-19 Coronavirus Disinfection
To understand the efficacy of Wellisair against the COVID-19 Coronavirus pandemic (initially 2019-nCoV) that emerged in 2019 in Wuhan, we must first understand the morphological structure of this type of virus, as well as its classification:
Electron microscope photo of the Coronavirus COVID-19 (SARS-CoV-2) - SCRIPPS RESEARCH INSTITUTE
Coronavirus belongs to the Coronavirinae subfamily of the wider Coronaviridae family, which is part of the Nidoviral order. They can be divided into 4 VOC subgenres: Alpha, Beta, Delta and Gamma. COVID-19 belongs to the SARS family, which is classified as a Betacoronavirus from the "B" lineage and originates in bats.
According to the genetic material, these viruses are included in group IV of the Baltimore classification, as the viral particle contains only one RNA chain in a positive polarity linear single chain.
The diameter of the virus is around 60 to 200 nm, has a nucleocapsid with helical symmetry and a lipid sheath that is derived from the membrane of the previously infected host cell. The characteristic projections in the form of a solar corona extend out from these pods.
Since this strain of the virus has only been around for a limited amount of time, it has not yet been possible to carry out any direct testing in terms of the effect Wellisair technology has on the virus.
However, it has been possible to test the device on viruses with a similar morphological structure to coronavirus, such as the Respiratory Syncytial Virus (RSV). RSV is classified within the Pneumoviruses group, specifically in the Paramyxoviridae family, and even though it doesn’t belong to the exact same family, this virus does share a great number of similarities to COVID-19 in terms of its lipid membrane and glycoprotein projections.
The oxidation reactions (lipid oxidation and protein oxidation) that occur in the RSV are the same as are expected to occur in COVID-19, which means that its efficiency in terms of eliminating the virus should be very similar.
Based on the results obtained from testing carried out for the Wellisair device on viruses with similar structures (RSV) to the COVID-19 Coronavirus, we expect the efficacy of our new technology to have an average elimination rate of 92 to 99%, depending on the humidity conditions.
|Pathogen||Test Result||Laboratory||Report Nº|
|Syncytial RSV||Mean||Exposure Time||% Effectivity|
|Wet||2 hours||99||Laboratory of viruses contaminating water and food University of Barcelona||20191212_3|
These conclusions are included in a study carried out by researchers from the Centro de Investigación en Seguridad y Control Alimentario (CRESCA) of the Universitat Politècnica de Catalunya (UPC) and the e-SHealth published in the IJOER magazine "International Journal of Engineering Research & Science".
Bibliographic Report University of Barcelona
The microbiology, virology and biotechnology department of the Laboratory for Viruses, Contaminants in Water and Food at the University of Barcelona has produced a bibliographic report on disinfection and the COVID-19 Coronavirus.
Coronaviruses more similar to the SARS-CoV strain are easily inactivated using common disinfectants and are especially susceptible to alcohol-based ones (such as OH Hydroxyl Radical technology).
The Coronavirus has a morphology that is very similar to the RSV respiratory syncytial virus, and according to tests carried out by the University of Barcelona, shows a reduction rate of 92 to 99% (dry/wet) in just 2 hours.
Although ozone is an especially efficient disinfectant for RNA viruses, high concentrations can be harmful to living organisms and are therefore unsuitable for any environments inhabited by humans.
In contrast, according to the results obtained in our laboratory, the Hydroxyl Radicals OH generated by Wellisair are expected to have the same inactivation effect on the Coronavirus, without the drawbacks of ozone toxicity.
Airtècnics press release in reference to the bibliographic report of the UB
Airtècnics states that the document "Report on the stability and disinfection of the new coronavirus 2019-nCoV" from the University of Barcelona is authentic and its content is true.
Faced with the current situation concerning the COVID-19 pandemic, different distributors, resellers and the media have published erroneous interpretations of this document, even going so far as to say that Wellisair had been validated by the “University of Barcelona” as being effective against the Coronavirus Covid-19.
Faced with the barrage of inquiries received from the UB for confirmation that they had indeed certified Wellisair for use on the Covid-19 Coronavirus, the University of Barcelona has issued a public statement denying these erroneous claims.
Airtècnics has not modified or falsified any documents or tests, nor any test carried out by the Wellisair team in the Laboratory of Viruses, Contaminants of Water and Food at the University of Barcelona.
We hold all the original documents for any tests carried out. We hereby attach the “Report on stability and disinfection of the new 2019 coronavirus-nCoV” from the UB, which has been notarized in case of any withstanding doubts there still may be.
Apart from this bibliographic report, the Laboratory of Viruses, Contaminants of Water and Food at the University of Barcelona has also carried out tests to verify the efficacy of the Wellisair unit (WADU-02 Wellis) when disinfecting multiple viruses on surfaces, such as Rotavirus, Respiratory Syncytial RSV and Coxsackievirus.
We take the opportunity to attach the summary tables showing the results of tests carried out by international laboratories and prestigious universities (including the UB) for the following main applications of the Wellisair device: