Abstract
1 Meningitis and Special Pathogens Branch, Division of Bacterial and Mycotic Diseases
4 Nosocomial Infections Laboratory Branch, Hospital Infections Program
2 National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333; Unité des Entérobactéries, Institut National de la Recherche Scientifique Unité 199, Institut Pasteur, 75724 Paris, Cedex 15, France
3 Division of Biochemistry, Walter Reed Army Institute of Research, Washington, D.C. 20307-5100