Asunto(s)
Infecciones por Adenoviridae/prevención & control , Infecciones por Enterovirus/prevención & control , Microbiología Ambiental , Aguas del Alcantarillado/virología , Adenoviridae/aislamiento & purificación , Enterovirus/aislamiento & purificación , Humanos , Federación de Rusia , Estaciones del Año , Aguas del Alcantarillado/análisisAsunto(s)
Clima Frío , Reservorios de Enfermedades , Promoción de la Salud/métodos , Helmintiasis/prevención & control , Adolescente , Distribución por Edad , Antihelmínticos/uso terapéutico , Niño , Preescolar , Salud Ambiental , Femenino , Helmintiasis/tratamiento farmacológico , Helmintiasis/epidemiología , Humanos , Masculino , Prevalencia , Distribución por Sexo , Siberia/epidemiologíaAsunto(s)
Explotaciones Pesqueras/normas , Helmintiasis/prevención & control , Animales , Vectores de Enfermedades , Peces/parasitología , Parasitología de Alimentos/normas , Helmintiasis/parasitología , Helmintiasis/transmisión , Humanos , Moluscos/parasitología , Control de Calidad , Federación de Rusia , SeguridadRESUMEN
Borrelia spirochetes were isolated from the adult ixodid tick (Ixodes persulcatus) in three areas of far eastern Russia, namely, Khabarovsk, Vladivostok, and Yuzhno-Sakhalinsk. Borrelia infective rates of ticks in those areas were 24.5, 41.4, and 25.1%, respectively (total rate was 26.6%). Spirochetes were also isolated from the tissues of small mammals captured at Khabarovsk (infective rate was 20.8%). Samples were classified by rRNA gene restriction fragment length polymorphism (RFLP) analysis. The isolated spirochetes from ticks were classified mainly RFLP ribotype group IV (B. garinii), followed by groups II (B. garinii), III (B. afzelii), and V (B. garinii), showing that B. garinii is a dominant species among them. Both B. garinii and B. afzelii were also found in rodents, and multiple infections with those two species were observed in some rodents. B. burgdorferi sensu stricto (group I) was not isolated from either ticks or rodents.
Asunto(s)
Vectores Arácnidos/microbiología , Borrelia/aislamiento & purificación , Ixodes/microbiología , Enfermedad de Lyme/microbiología , Roedores/microbiología , Animales , Borrelia/genética , Reservorios de Enfermedades , Oído Externo/microbiología , Corazón/microbiología , Enfermedad de Lyme/epidemiología , Polimorfismo de Longitud del Fragmento de Restricción , Prevalencia , ARN Ribosómico 23S/genética , Federación de Rusia/epidemiología , Vejiga Urinaria/microbiologíaRESUMEN
Materials on the epidemiological characterization of pseudotuberculosis at the Khabarovsk Territory taken as a whole and in individual settlements, as well as on the evaluation of epizootic situation in natural foci of infection and foci created by human activities, are presented. The results of laboratory studies of vegetables, washings from environmental objects, soil specimens, material taken from rodents are demonstrated and the characterization of the virulent properties of isolated Yersinia pseudotuberculosis strains is given. Two periods (1976-1982 and 1983-1989) were distinguished by their main epidemiological features. The most important feature of the second period is the shift of the seasonal morbidity rise to the middle of summer, which is explained by activation of the mechanism of transmission of this infection due to the supply of early vegetables infected in local vegetable stores. An essential role of wild and synanthropic Muridae as the reservoir of infection is shown; these rodents and the soil maintain the circulation of the infective agent accumulating in the most favorable habitat, vegetable stores. The regularities established in this work contribute to the improvement of epidemiological surveillance.