Abstract
Streptococcus pseudoporcinus is a beta-hemolytic Gram-positive, catalase-negative, nonmotile coccus arranged in short chains, usually found in the female genitourinary tract and differentiated from Streptococcus porcinus in 2006. Only two human infections associated with this organism have been reported to date: one in a patient with a first digit wound infection and another with lower extremity cellulitis. We describe two novel cases of Streptococcus pseudoporcinus causing endocarditis in one and pneumonia with empyema in another, illustrating the potential of these bacteria to cause severe invasive and life-threatening disease.
Highlights
Streptococcus pseudoporcinus is a beta-hemolytic Grampositive, catalase-negative, nonmotile coccus arranged in short chains and first described in 2006 [1]
Two reported human infections implicated this bacterium including a wound infection of a finger as a result of trauma and another with left lower leg cellulitis associated with stasis dermatitis [2, 3]
Both highlight the potential of this organism to cause invasive infections in environments outside of its normal habitat and illustrate that infections caused by Streptococcus pseudoporcinus can lead to severe and lifethreatening disease
Summary
Streptococcus pseudoporcinus is a beta-hemolytic Grampositive, catalase-negative, nonmotile coccus arranged in short chains and first described in 2006 [1]. It was phenotypically identified as Streptococcus porcinus, sequencing data differentiated it as a novel species [1]. We describe two additional cases, one causing endocarditis and a second with pneumonia and empyema. Both highlight the potential of this organism to cause invasive infections in environments outside of its normal habitat and illustrate that infections caused by Streptococcus pseudoporcinus can lead to severe and lifethreatening disease
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