AZT derivatives exhibiting spermicidal and anti-viral activity

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The invention discloses a method of preventing transmission of viral pathogens between a source of viral pathogens and a target of said viral pathogens comprising positioning between said source and said target a microporous membrane material comprising: 1) a thermoplastic polymer or polytetrafluoroethylene and 2) a water- and oil-repellent fluorochemical compound which provides said membrane with oloephobic, hydrophobic and viral barrier properties, said membrane being oriented in at least one direction.

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