Group C streptococcal endocarditis.

Group C streptococcus is found in many domestic animals and rarely causes infection in human beings. Severe infections caused by these bacteria are associated with high morbidity and mortality rates. We present a case of group C streptococcus endocarditis with sequelae, right-eye endophthalmitis, and multilobar pneumonia caused by septic embolization from the infected mitral valve.