The authors describe the case of purulent meningitis of a male patient who has been diagnosed with the role of Streptococcus suis in the background of the infection. The bacterium is a colonizing agent in the upper respiratory, gastrointestinal tract, and genital organs of various animals (pigs, ruminants, cats, dogs, deer and horses). The pathogen is predominantly animal pathogenic, but human cases also occur with zoonotic origin. The disease occurs primarily in sepsis, meningitis, in both animal and human cases. The prevalence of the disease is very diverse in the continents, the highest is in Asia. There is a difference between the Asian and the European and American regions, which is affected by cultural and eating habits. The appearance of bacteria in our country is primarily due to an occupational disease, but also imported cases may occur, due to the emerging tourism. For the precise microbiological diagnosis of the pathogen, the existence of modern identification methods is indispensable. The authors want to draw attention to this bacterium that causes serious infections, so it is important to summarize and disclose the knowledge available in the literature. Orv Hetil. 2019; 160(1): 30-34.