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Invasive Haemophilus influenzae Disease and Antibiotic Susceptibility of Invasive Isolates in Minnesota, 2002-2005

Triden, Lori*; Glennen, Anita BS†; Juni, Billie MS†; Lynfield, Ruth MD*

Infectious Diseases in Clinical Practice:
doi: 10.1097/IPC.0b013e318157d260
Original Articles

We analyzed susceptibility patterns and β-lactamase production of 184 invasive Haemophilus influenzae disease case isolates that were submitted as part of active laboratory and population-based surveillance over a 4-year period in Minnesota. All ampicillin-resistant isolates produced β-lactamase. Rates of susceptibility to commonly used antimicrobials were high for agents other than ampicillin.

Author Information

*Emerging Infections Program, Infectious Disease Epidemiology, Prevention and Control Division, and †Public Health Laboratory Division, Minnesota Department of Health, Saint Paul, MN.

Funding/Support: This surveillance is supported by the Centers for Disease Control and Prevention Emerging Infections Program Cooperative Agreement U50/CCU511190-09.

Address correspondence and reprint requests to Lori Triden, Emerging Infections Unit, Minnesota Department of Health, 625 Robert St North, Saint Paul, MN 55164-0975. E-mail:

© 2007 Lippincott Williams & Wilkins, Inc.