Deep neck infection due to Lactococcus lactis cremoris: a case report

Abstract

This report describes the first case of deep neck infection resulting from Lactococcus lactis subsp. cremoris. The case is associated with the consumption of unpasteurized milk and occurred in a patient with a buccal mucosa tumor. Anti-infective therapy with ceftriaxone and metronidazole resulted in complete resolution.

Infective Endocarditis Complicated by Intracerebral Hemorrhage due to Lactococcus lactis subsp. cremoris

“…In some cases, the ingestion of unpasteurized milk, sour cream, or yogurt was recognized [5,6,9,[11][12][13]. Our patient and other previously reported cases [2,3,10,14], however, had no history of ingestion of unpasteurized milk, sour cream, nor yogurt.…”

“…Only a few cases of human infection due to L. lactis have been reported in the English literature, namely, a liver abscess in an elderly patient, cerebellar abscess, septicemia in a patient with chronic lymphocytic leukemia, septic arthritis, necrotizing pneumonitis, peritonitis in an automated peritoneal dialysis patient, and deep neck infection [2,3,[5][6][7][8][9]. Only three cases of infective endocarditis secondary to L. lactis subsp.…”

Brain abscess caused by Lactococcus lactis cremoris in a child

“…Only a few adult cases have been reported in the literature including septicemia, endocarditis, pneumonitis, arthritis, liver abscess, and deep neck infection [2,[7][8][9][10]. Only one case of central nervous system infection in adult caused by L. lactis subsp.…”

“…Penicillin or third-generation cephalosporin is commonly preferred [1,6,9]. In addition, it was reported that L. lactis might be sensitive to antibacterials such as ß-lactams, macrolides, aminoglycosides, and vancomycin [1,2,12,14].…”

“…L. lactis cremoris is particularly preferred for the production of cheddar cheese [3]. Although L. lactis cremoris is commonly considered to be non-pathogenic for immunocompetent adults, human infections have been reported [2,[7][8][9][10]. We report the first case of L. lactis cremoris infection in childhood presenting with brain abscess.…”