Related Experiment Video
Updated: Feb 10, 2026

Experimental Human Pneumococcal Carriage
Published on: February 15, 2013
Two cases of acute pneumococcal purulent arthritis
Masafumi Seki1, Bin Chang2, Kengo Ohshima3
1Division of Infectious Diseases and Infection Control, Sendai City, Miyagi, Japan.
Abstract:
We present two adult cases of pneumococcal severe arthritis one case with, and other case without pericarditis those occurred in one season. Both cases eventually recovered, and the isolated S. pneumoniae strains were serotype 12F and penicillin susceptible. The patients were not elderly and had no medical history including pneumonia and vaccination. Although S. pneumoniae is a relatively rare causative pathogen of arthritis and/or pericarditis recently, a greater number of cases may be expected as a result of serotype conversion due to the increased use of pneumococcal conjugate vaccines in Japan.
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