title: [The epidemiological characteristics of Sonne and Flexner dysentery in St. Petersburg in 1953-1994].
abstract: In connection with the growth of mortality in Flexner's dysentery observed since 1991 and a rise in morbidity in this infection since 1993 the data on the registered cases of Shigella flexneri and Shigella sonnei infections in St. Petersburg for the period of 1953-1994 were analyzed. In the 60-80s the specific features of the epidemic process was determined by S. sonnei infection which constituted up to 90% of all documented cases of dysentery. Flexner's dysentery lost the character of a mass epidemic disease in the 60s, but in the 70s became again capable of epidemic spread, which was testified by annual seasonal rises producing a half of all cases registered per annum and two rises with peaks in 1975 and 1984. In 1991-1992 the tenfold rise of morbidity in Flexner's dysentery took place in the presence of a common level of morbidity of Shigella infections. In 1993-1994 an essential change in the etiological structures of Shigella infections was observed: morbidity in Flexner's dysentery rose 6 times and morbidity in Sonne dysentery dropped 3 times, which was probably due to socio-economical changes in the living conditions of the population during recent years.
authors.forename: Zh V
authors.initials: ZhV
authors.lastname: Poplavskaia
authors.forename: I V
authors.initials: IV
authors.lastname: Parkov
authors.forename: L L
authors.initials: LL
authors.lastname: Shcherbak
authors.forename: N V
authors.initials: NV
authors.lastname: Safonova
authors.forename: N I
authors.initials: NI
authors.lastname: Romanenkova
mesh_terms: D000328:Adult; D002648:Child; D004196:Disease Outbreaks / Q000706:statistics & numerical data; D004405:Dysentery, Bacillary / Q000453:epidemiology*; D006801:Humans; D009017:Morbidity / Q000639:trends; D009026:Mortality / Q000639:trends; D012426:Russia / Q000453:epidemiology; D012621:Seasons; D012763:Shigella flexneri; D012764:Shigella sonnei; D014505:Urban Population / Q000706:statistics & numerical data*