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Abstract

The present invention provides the use of nanoparticles of a compound of general formula M.sub.nX.sub.y, where M is (i) a metal selected from the group consisting of Calcium (Ca), Aluminium (Al), Zinc (Zn), Nickel (Ni), Tungsten (W) or Copper (Cu); or (ii) a non-metal selected from the group consisting of Silicon (Si), Boron (B) or Carbon (C); in which n is equal to 1, 2, or 3, and X is (iii) a non-metal selected from the group consisting of Oxygen (O), Nitrogen (N), or Carbon (C); or (iv) an anion selected from the group consisting of phosphate (PO.sub.4.sup.3-), hydrogen phosphate (HPO.sub.4.sup.2-), dihydrogen phosphate (H.sub.2PO.sub.4.sup.-), carbonate (CO.sub.3), silicate (SiO.sub.4.sup.2-), sulphate (SO.sub.4.sup.2-), nitrate (NO.sub.3.sup.-), nitrite (NO.sub.2.sup.-); in which y is equal to 0, 1, 2, 3 or 4; for use in reducing and/or preventing virus transmission. Articles of protective clothing or filters are provided in which the fibres are coated with said nanoparticles for use in reducing and/or preventing virus transmission.

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First Claim