ABSTRACT
Data on emergent epidemiological analysis of the cholera outbreak in Kazan are presented. A version of the cholera focus emergence was confirmed, namely water route of transmission as a result of bathing in a water reservoir where sewage waters had penetrated. The outbreak had local and acute character. The complex of cholera control interventions aimed at localization and liquidation of the focus proved to be effective.
Subject(s)
Cholera/prevention & control , Water Pollution/prevention & control , Cholera/epidemiology , Cholera/etiology , Cholera/transmission , Communicable Disease Control , Disease Transmission, Infectious , Fresh Water/microbiology , Humans , Incidence , Russia , Sanitation/standards , Sewage/adverse effects , Sewage/microbiology , Swimming , Vibrio cholerae/isolation & purificationABSTRACT
Cases of cholera in the Derbent District of the Daghestan took predominantly mild and moderate clinical forms. The ratio of patients to Vibrio carriers was 1:1.25. The etiological agent of the epidemic was V. eltor, serovar Ogawa. Cholera patients were of greater epidemiological importance as the sources of infection in comparison with Vibrio carriers. Carrier state after convalescence was observed in 1.1% of cases. The population was infected with cholera, as a rule, through everyday contacts and in more rare cases by the water route. The highest rate of contamination with V. cholerae was registered in the age group of 0-2 years.
Subject(s)
Cholera/epidemiology , Disease Outbreaks/statistics & numerical data , Acute Disease , Adolescent , Adult , Carrier State/epidemiology , Carrier State/transmission , Child , Child, Preschool , Cholera/transmission , Dagestan/epidemiology , Female , Humans , Infant , Male , Middle Aged , Rural Population/statistics & numerical data , Urban Population/statistics & numerical data , Water SupplyABSTRACT
The epidemic of cholera in the Derbent District of the Daghestan was imported into the region. 172 cholera patients and 204 Vibrio carriers were registered in 23 settlements of the region during the period of June 26 to October 12, 1994. The wide spread of this infection was facilitated by high migration activity of the population and the belated introduction of measures for limiting migration. The most severe outbreaks of cholera were observed in Derbent and in the villages of Mamedkala and Morskoe.
