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Special Bacteriology

Enteric Section

The Enteric Section isolates, identifies, and serotypes Salmonella, Shigella, and shiga-toxin-producing Escherichia coli (E.coli). This is accomplished by conventional methods, which include biochemical and serological tests to characterize different strains of these organisms. All reportable foodborne bacterial isolates (Campylobacter, Salmonella, Shigella, Listeria, Vibrio species, and shiga-toxin-producing organisms) are reported to the Epidemiology Division and the Centers for Disease Control and Prevention (CDC).

Parasitology Section

The Parasitology Section processes stools for ova and parasites by concentration wet mount, permanent stains, and acid-fast stains. Pinworm preparations are examined for eggs. Trained staff identify blood parasites by stained smears and arthropod identification is also available. The CDC maintains a website, DPDx Laboratory Identification of Parasites of Public Health Concern, for parasitology training and assistance in the identification of rare parasites.

Reference Bacteriology Section

The Reference Bacteriology Section utilizes conventional methods, gas chromatography, and fluorescent-staining procedures to identify and characterize unknown bacteria. The staff performs isolation and identification of pathogens from clinical and environmental specimens. They work closely with the Epidemiology Division during outbreak investigations to protect the public by analyzing foods and environmental specimens for disease-causing organisms or their toxins.

Influenza Culture Section

Respiratory viruses (Parainfluenza 1, 2, 3; Adenovirus and Respiratory Syncytial virus) are cultured in cell lines engineered for propagation of viruses. Further identification is accomplished by Direct Fluorescent Stain.

See also, Bioterrorism and Emerging Infectious Diseases.

Page last updated: June 13, 2023