Infections caused by Kingella kingae: report of four cases and review

Kingella kingae, formerly known as Moraxella kingae, is a fastidious, non-motile, coccobacillary, fermentative Gram-negative rod that has been chiefly associated with two types of infections in man: bone and joint infections, and endocarditis. We describe four patients with K. kingae infections, one with septicaemia, two with endocarditis, and one with osteoarthritis. The current literature on infections with K. kingae is reviewed.