Viroblock SA Reports a 99% Boost of Efficacy of Facemasks Against H5N1

PLAN-LES-OUATES, Switzerland - Viroblock SA announces that its antiviral products boosts the efficacy of facemasks by at least 99.0%, i.e. 100 times better and a peak performance of 1000 times, against avian influenza virus H5N1. Disposable facemasks are thus far not very effective against viruses, such as influenza, whose sizes are 0.02 to 0.3 microns.

Its patented technology (VCCD Tech) potentially inactivates all families and strains of enveloped viruses, like human, avian and swine Influenzas, SARS, AIDS, Ebola and smallpox viruses. VCCD Tech uses a mechanism of action that greatly limits the development of any viral resistance.

The test involved flowing air contaminated with the aerosolized avian Influenza H5N1 virus through a set of pre-impregnated facemasks. Airstreams that passed through facemasks (percolation) were then analyzed for the presence of residual infectious virus. Performance was compared to non-impregnated facemasks. This series of tests was performed at Retroscreen Virology Ltd, a recognized world leader in the research and testing of antiviral compounds and vaccines.

“We are very pleased by the excellent results obtained during the last 6 months. In-vivo campaigns (ferrets) have recently demonstrated the efficacy of VCCD Tech as an antiviral intranasal spray and this latest series of tests shows the stunning performance of our formulations on facemasks. Meanwhile the most recent ex-vivo screening campaigns prove its efficacy on additional viruses.

“H5N1 is just one of a number of emerging viruses such as SARS, and lately the swine flu, which represent a genuine threat across the globe. Viroblock has the technology platform to contribute to the development of new and innovative antiviral countermeasures, such as facemasks to protect not only frontline and government staff such as nurses, doctors, paramedics, firemen and police officers, but also the general public. I believe that Viroblock has all the assets to become a key player in pandemic influenza preparedness efforts,” comments CEO Thierry Pelet.

“All these results establish the broad spectrum of action of VCDD Tech against enveloped viruses and the flexibility in its deployment. Our technology is a breakthrough for inactivating enveloped viruses and their strains; I am convinced that we have not yet exploited all its potential. I am pleased to be part of an outstanding team that works tirelessly to develop and fully exploit our technology platform,” added Francois Gilardoni, member of the Board.

About Viroblock SA

Viroblock SA is a Swiss start-up founded in 2005, which has become a pioneer and world leader in the blocking virus transmission technology. Viroblock was founded by Dr. Donald F. H. Wallach who was a worldwide expert in artificial and bio-membranes, and non-phospholipid vesicles.

Its patented VCCD technology is suitable for solid supports, colloidal suspensions, emulsions, and aerosol sprays.

Additional information is available on the company’s website at www.viroblock.com

Contact: Dr. Thierry Pelet Chief Executive Officer Viroblock SA Phone: +41-22-884-8344 E-Mail: info@viroblock.com

Source: Viroblock SA

Contact: Dr. Thierry Pelet, Chief Executive Officer, Viroblock SA, Phone: +41-22-884-8344, E-Mail: info at viroblock.com