[The epidemic importance of the virological study of sewage for rotaviruses]. / Epidemicheskaia znachimost' virusologicheskogo issledovaniia stochnykh vod na rotavirusy.

The results of correlation of rotavirus circulation indices among apparently normal and sick children and the rates of rotavirus antigen detection in sewage from an orphanage and an infectious ward of children's hospital are presented. It was established that there should be up to 1% of virus excretors for rotaviruses to be detectable in sewage of peripheral collectors of children's institutions. A significant increase in the rate of detection of rotaviruses in sewage may indicate an activation of the epidemic process of rotavirus infection.

[The results of a study of the contamination of bodies of water by rotaviruses against a background of gastroenteritis morbidity]. / Rezul'taty izucheniia kontaminatsii vodnykh ob''ektov rotavirusami na fone zabolevaemosti gastroénterita.

The results of a sanitary virological survey of the prevalence of rotaviruses in water objects in relation to gastroenteritis incidence are presented. Some regularities of the epidemic process of rotavirus infection were discovered: a high portion of infants involved, occurrence of cases of the disease predominantly in the cold periods of the year, a significant portion (23.8%) of rotavirus gastroenteritis in the total incidence of acute intestinal infections, etc. Besides, comparison of the data on the dynamics of rotavirus infection incidence and on the contamination of water objects with rotaviruses revealed a strong correlation between these data. The possibility of using this information for the evaluation of the epidemiological situation is discussed.

[The possibility for the sanitary removal of enteroviruses from water reservoirs in the case of intensive irrigation agriculture]. / Izuchenie vozmozhnosti sanatsii vodnykh ob''ektov ot kishechnykh virusov v usloviiakh intensivnogo oroshaemogo zemledeliia.

The efficacy of elimination of enteric viruses from water in the process of exploitation of a closed irrigating system is evaluated. Experimental and natural observations showed the half-life of the index virus in the water objects of the irrigating system to be 1.57 days. The potentials of using a temperature-dependent variant of poliomyelitis virus as the internal control in studies of the prevalence of enteric virules among human subjects and in the environment under conditions of intensive irrigated agriculture are considered.

[Computer model for prognosis of incidence of aseptic meningitis]. / Komp'iuternaia model' prognozirovaniia zabolevaemosti seroznym meningitom.

A possibility of construction of a mathematical model for current prognosing of aseptic meningitis incidence both for 2-4 months in advance and for the whole year has been demonstrated. The initial information consisted of the data on prevalence of enteroviruses in water objects as from May. Comparison of the actual and estimated incidence indicates that with the proposed model, up to 90.4% of the incidence of aseptic meningitis may be explained.