<;P>;PROBLEM TO BE SOLVED: To provide a method for controlling diseases caused by bacteria, fungi or viruses in a honeybee, an animal or a vegetable, and to provide a method for promoting the growth of the honeybee, the animal or the vegetable. <;P>;SOLUTION: The bacterium belongs to Pseudomonas fons, and has ability to inhibit the infection with the bacteria, the fungi and the viruses, and the proliferation thereof in the honeybee, the animal or the plant. The agent for inhibiting the infection with the pathogenic bacteria, fungi or viruses, and the proliferation thereof contains the bacterium as an active ingredient. Especially, Pseudomonas fons MS-1 strain (accession number: FERM P-21673) is preferable as the new Pseudomonas bacterium. <;P>;COPYRIGHT: (C)2010,JPO&INPIT