The mask was tested by the Wismedery laboratory to determine the antiviral activity of its fabric, which is coated in zinc oxide nano-particles that destroy bacteria, fungi and viruses. Director of the Clinical Microbiology Laboratory at Tel Aviv University, Prof. According to Amos Adler, when tested against the two new variants – although not specifically the delta variant – it was found to show “potent antiviral activity”.
“COVID-19 variants may have distinct epidemiological or immunological properties that result from point mutations in critical regions of the receptor binding domain,” Adler said in a statement. “Nevertheless, their overall structure and biophysical properties of viruses are almost identical. Therefore, the antiviral effect exerted by Sonovia treated fabrics is expected to be present in all COVID-19 variants, including the recent delta variant.
Adler consults for the European Center for Disease Control.
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Sonovia developed a near-permanent, ultrasonic, fabric-finishing technology for mechanical impregnation of zinc oxide nanoparticles in textiles. The company ramped up efforts to make masks using its anti-pathogen fabric at the start of the coronavirus crisis in Israel to help frontline workers stay safe.
The technology is based on a laboratory-level sonochemical process that was developed at Bar-Ilan University.
Until the pandemic, it had not produced a single product. Before this, thousands of masks were donated to Israeli hospitals and medical professionals.
Since then, the company has sold hundreds of thousands of masks in more than 100 countries.