Fecha de publicación: 09/09/2021 Fuente: WIPO "apis cerana" The present invention relates to animals and more specifically to insects. In more details the invention relates to an edible composition or insect artificial diet comprising bacteria, fungi or any fragment or spore thereof for use as a vaccine in pre venting a microbial disease or infection in an insect. Still, the present invention relates to preventive methods and different uses relating to said compositions or bacteria, fungi or fragments or spores thereof.