Abstract: The invention involves vaccine preparations comprising cell wall protein component of Pseudomonas aeruginosa as active ingredient and a pharmaceutically acceptable carrier. The preparations are suitable for parenteral administration for prophylactic treatment of disease caused by infection of Pseudomonas aeruginosa. The cell wall protein component is characterized by the fact that the same exhibits low toxicity and without type-specificity to the variety of antigens of Pseudomonas aeruginosa.