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Enriched Columbia medium was tested against Levinthal medium for the isolation of Haemophilus influenzae type b. In both media, Haemophilus influenzae type b recovery and antigen-antibody precipitation halos were equivalent. Haemophilus influenzae type b colony size and iridescence were superior on enriched Columbia medium. Enriched Columbia medium is inexpensive, simply prepared and easily standardised.


Journal article


Eur J Clin Microbiol Infect Dis

Publication Date





215 - 217


Agar, Animals, Culture Media, Haemophilus influenzae, Horses, Humans, Immune Sera