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Journal of Clinical Microbiology, February 2005, p. 938-941, Vol. 43, No. 2
0095-1137/05/$08.00+0     doi:10.1128/JCM.43.2.938-941.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Prevalence and Serotype Distribution of Encapsulated Haemophilus influenzae Isolates from Patients with Lower Respiratory Tract Infections in Poland

Anna Skoczyska,^1* Magdalena Lewandowska,^2, Anna Klarowicz,¹ and Waleria Hryniewicz¹

Department of Epidemiology and Clinical Microbiology, National Institute of Public Health,¹ Department of Microbial Biochemistry, Institute of Biochemistry and Biophysics of the Polish Academy of Sciences, Warsaw, Poland²

Received 13 July 2004/ Returned for modification 30 August 2004/ Accepted 8 October 2004

Among 1,272 H. influenzae isolates obtained from patients with lower respiratory tract infections, 5.6% were found to be encapsulated. The most common were serotypes b (40.3%) and e (38.9%) followed by serotypes f (16.7%) and d (4.1%). All encapsulated isolates within a particular serotype showed high genetic homogeneity and did not produce ß-lactamases.

Present address: Department of Microbial Biochemistry, Institute of Biochemistry and Biophysics of the Polish Academy of Sciences, Warsaw, Poland.

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