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Summary Cl. botulinum type E is ubiquitous in Sweden and the adjacent seas. It is of terrestrial origin and is the dominant type in the Baltic's catchment area. The Baltic is thus a reservoir for type E organisms, which spread to neighbouring waters. The high frequency of type E organisms in the peel of stored potatoes may be regarded as one of the most definite indications of the terrestrial origin of this clostridium.
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Annsofi Johannsen (1963) studied this question.
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