Methods and apparatus to prevent colds, influenzaes, tuberculosis and opportunistic infections of the human respiratory system

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An article of clothing for the medical or chemical field for protection against liquids and/or micro-organisms comprises at least three layers. The outer layer (1) is formed of a hydrophobic fabric which forms a liquid barrier and a micro-organism barrier. The inner layer (22) comprises at least one carrier material (24) having a net-like, apertured or open mesh structure secured to said outer layer at a non-critical position at which the danger of passage of liquids and/or micro-organisms through the outer layer is low. At least one membrane (26) is secured to the carrier material (24) at the aforementioned critical position at which the danger exists of the passage of liquid and/or micro-organisms through the outer layer.

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