PROBLEM TO BE SOLVED: To provide an antimicrobial and antiviral composition capable of exhibiting good antimicrobial and antiviral property for long time when applied to various applications and to provide its manufacturing method and the like.SOLUTION: There is provided an antimicrobial and antiviral composition containing a silica coated layer on at least a part of surface of cuprous oxide particles, and having the content of the silica coated layer of 5 to 20 pts.mass based on 100 pts.mass of the cuprous oxide particles and a BET specific surface area of the cuprous oxide particles coated with silica of 5 to 100 m2/g.COPYRIGHT: (C)2014,JPO&INPIT【課題】種々の用途に適用した際に、長期に渡って良好な抗菌抗ウイルス性を発揮し得る抗菌抗ウイルス性組成物及びその製造方法等を提供する。【解決手段】亜酸化銅粒子の表面の少なくとも一部にシリカ被覆層を有し、前記シリカ被覆層の含有量が、前記亜酸化銅粒子100質量部に対して5~20質量部であり、シリカで被覆された亜酸化銅粒子のBET比表面積が5~100m2/gである抗菌抗ウイルス性材料。【選択図】なし
