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Appl Environ Microbiol. 1968 April; 16(4): 553-557
Copyright © 1968 American Society for Microbiology. All Rights Reserved.

Incidence of Clostridium botulinum Type E in Salmon and Other Marine Fish in the Pacific Northwest

Department of Microbiology, Oregon State University, Corvallis, Oregon 97331

ABSTRACT

Salmon, sole, cod, oysters, clams, and crabs from ocean waters along the coast of Oregon and Washington were examined for the presence of Clostridium botulinum type E. The organism was detected by identification of the type E toxin in enrichment cultures of the viscera of individual fish. Of 369 salmon specimens, 48 yielded cultures containing toxin lethal to mice, and almost half of the toxic cultures were shown to contain botulinal toxin, chiefly type E. Eighteen of 113 sole and cod specimens, 4 of 22 Dungeness crab specimens, 5 of 16 oyster specimens, and 27 of 115 clam specimens gave rise to cultures containing botulinal toxin which was usually type E, although types A and B were occasionally encountered.

¹ On leave from San Jose State College.