Serratia spp. causes the 2% of nosocomial infections. Serratia marcescens is the pathogenic species for excellence as it causes more than 90% of cases, however, there are very few reported cases of clinical infection caused by other minority species, among which is S. rubidaea. We present a case of nosocomial bacteremia by S. rubidaea, probably related to a peripheral catheter, in a healthy teenager who consulted to the emergency room after suffering a fit while practicing strenuous sport.