Pathogens and Protocols

MicrobeNet Pathogen Database

As of 2016, the MicrobeNet database contains complete information on more than 2,400 pathogens:

  • More than 2,000 bacteria: examples of rare bacteria completely characterized in MicrobeNet are Nocardia, Neisseira, Brevibacterium, Corynebacterium, Gordonia, Klebsiella, and Haemophilus.
  • More than 400 fungi, including Histoplasma capsulatum, Blastomyces dermatitidis, and Coccidioides immitis/posadasii, all of which are dangerous organisms causing significant disease and even death in otherwise healthy individuals.
image of B. pseudomallei is a bacterium that causes melioidosis.

Burkholderia pseudomallei

image of the fungus Coccidioides causes Vally fever, also called coccidioidomycosis.

Coccidioides immitis

image of C. diphtheriaecauses diphtheria, a serious infection, which can be prevented by vaccination.

Corynebacterium diphtheriae

image of H. influenzae (including Hib) is a bacterium that can cause a severe infection, occurring mostly in infants and children younger than five years of age.

Haemophilus influenza

image of Klebsiella is a type of Gram-negative bacteria that can cause different types of healthcare-associated infections, including pneumonia, bloodstream infections, wound or surgical site infections, and meningitis

Klebsiella pneumoniae

image of culture of bacteria N. asteroides, which causes at least half of invasive infections of nocardiosis

Nocardia asteroides

image of a photomicrograph of fungus H. capsulatum, which causes infections called histoplasmosis

Histoplasma capsulatum


Protocols developed and validated by CDC experts are available on MicrobeNet.

  • More than 2,000 bacteria including: Esculin, Amino Acid Metabolism, Antibiotic Susceptibility Testing, and Sugar Fermentation.
  • Identification of fungi: Sugar Fermentation and Assimilation, Nitrate Assimilation, Urea Hydrolysis, Cycloheximide Susceptibility.