title: A reassessment of sputum specimens for laboratory diagnosis of pneumococcal pneumonia.
mesh_terms: D000368:Aged; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D007223:Infant; D011018:Pneumonia, Pneumococcal / Q000175:diagnosis*; D011446:Prospective Studies; D012189:Retrospective Studies; D013183:Sputum / Q000382:microbiology*; D013296:Streptococcus pneumoniae / Q000302:isolation & purification*