In developed countries, invasive disease caused by non typhoidal Salmonella spp. is rare. Here we present a Danish case of Salmonella enterica serovar Enteritidis (S. Enteritidis) meningitis in an infant who had no underlying diseases. The child had had no known expositions, and the source of the infection was never identified. The chance of finding uncommon microorganisms as cause of invasive infections such as meningitis and the choice of initial empiric antimicrobial treatments is discussed.