An absorbent article comprising  an absorbent structure with a wearer facing side and a garment facing side and a carrier member has been patented by SCA. The carrier member comprises first and second water-vapour impermeable material layers, said material layers being sealed together by a sealing to form a water-vapour impermeable volume therebetween, said carrier member being located on the wearer facing side of the absorbent structure, and  a bacterial composition and delivery vehicle mixture contained in the water-vapour impermeable volume, wherein said bacterial composition is in the form of a dry powder and is dispersed in or applied to the delivery vehicle, wherein said delivery vehicle is a hydrophobic composition that improves protection against moisture from reaching the bacterial composition.