Table 3.

IgA antibody to PspA of S. pneumoniae and UspA of M. catarrhalis in sputa of adults with chronic obstructive lung disease

SubjectTime (mo) of studyIgA titer
Sputum collectionColonizationTotal (μg/ml)Specific (ng/ml)Specific/total (ng/μg)
S. pneumoniae
 150202284.91.407
 22005383.11.573
 3124, 5, 11, 1440522,794.256.264
M. catarrhalis
 153, 8202163.20.806
 22010536.70.127
 31294051,899.5468.860