Serological studies in acute maxillary sinusitis.

A comparison was performed between bacteriological and serological findings in 97 patients suffering from acute maxillary sinusitis. A significant titre change (larger than or equal to 2 titre steps) of complement-fixing antibodies to H. influenzae was demonstrated in 15 patients. H. influenzae was demonstrated in aspirated sinus secretions from 7 of these 15 patients. Further, titre changes to Neisseria catarrhalis were demonstrated in 25 patients. No significant titre changes in anti-streptolysin and anti-staphylolysin titres were demonstrated. The results are discussed briefly.