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Tumour necrosis factor α (TNFα) antagonists have been associated with reactivation of tuberculosis and development of other opportunistic infections.1–4 We have recently observed a case of septic arthritis caused by Moraxella (Branhamella) catarrhalis in a patient treated with infliximab that we describe briefly here.
CASE REPORT
The patient, a 45 year old man, was referred to us in September 1999 for evaluation of an eight year history of recurrent episodes of arthritis of the knees and elbows and of recurrent episodes of inflammatory swelling with pitting oedema over the dorsum of the hand. One year before the onset of arthritis he had undergone replacement surgery for an insufficient aortic valve. Physical examination disclosed swelling, effusion, and tenderness in the right knee, together with tenosynovitis of the left tibialis posterior and flexor digitorum …