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Review
, 77 (2), 164-7

Should Sputum Isolates of Haemophilus Influenzae Be Serotyped?

Review

Should Sputum Isolates of Haemophilus Influenzae Be Serotyped?

T E Liston. South Med J.

Abstract

In a patient with pneumonia, sputum culture revealed ampicillin-resistant Haemophilus influenzae, type b. Although nontypable H influenzae is a normal inhabitant of the upper respiratory tract and should be considered normal flora, typable H influenzae is found in less than 5% of healthy persons. Although only 1.8% of sputum cultures reveal typable H influenzae, these strains account for 98.3% of isolates from blood cultures of patients with pneumonia due to H influenzae. Serotyping of sputum isolates is recommended in patients with pneumonia to separate pathogenic typable strains from nonpathogenic nontypable strains.

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