OUTBREAK AND SPORADIC MORBIDITIES WITH SALMONELLOSIS IN CORRELATION WITH PLASMID CHARACTERISTICS OF MICROBES

Summary - The authors have studied comparable plasmid characteristics
of 694 Salmonella Enteritidis strains derived from sick people during
outbreaks and sporadic morbidity with salmonellosis in Primorsky
Krai. As indicated, by the degree of correlation between outbreak and
sporadic morbidities the outbreaks can be divided into three types.
The first includes outbreaks closely related to the sporadic morbidity
and characterised by a single pathogenic agent. The second one
is considered to be as restrictedly bounded with sporadic morbidity,
and the plasmid type of a microbe known to cause the outbreak does
not play leading role in the aetiology of the sporadic morbidity. The
third type includes outbreaks that do not have direct relation to the
sporadic morbidity. The authors believe the aetiological unity of both
outbreak and sporadic morbidities only occurs in the first case when
there are grounds for saying that the sporadic morbidity is an unconfirmed
epidemic. The second and the third types of outbreaks only
partially correspond to the sporadic morbidity, or have no relation to it.

S. Enteritidis, plasmid types, outbreaks

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