Diagnosis of Pneumococcal Pneumonia by Detection of Antigen in Saliva
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A sandwich enzyme-linked immunosorbent assay was used for the detection of pneumococcal C polysaccharide in saliva samples from patients with radiologically verified pneumonia. In 16 of 29 patients (55%) with pneumococcal pneumonia, as verified by conventional culture methods, the antigen was present in saliva specimens. The test was negative in 35 of 36 patients (97%) with non-pneumococcal pneumonia and in all saliva samples from a control group, consisting of 25 patients with no signs of respiratory disease. It is concluded that the detection of pneumococcal C polysaccharide in saliva offers a valuable complement to conventional diagnostic methods for pneumococcal pneumonia.
Saliva--a diagnostic window to the body, both in health and in disease.
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