[Cyclic morbidity of certain natural foci infections in the Russian Federation]. / Tsiklichnost' zabolevaemosti nekotorymi prirodno-ochagovymi infektsiiami v Rossiiskoi Federatsii.

A special search program for finding out hidden periodicity was used; such program made it possible to put in order the apparently chaotic sequence of numerical data that are summed up to form the resulting curve, the latter reflecting the actual dynamics of the epidemic process. The cyclic character of morbidity in tick-borne encephalitis, hemorrhagic fever with the renal syndrome (HFRS), tularemia and leptospirosis among the population of Russia for the last 45-54 years was revealed. In tick-borne encephalitis cycles lasting 17-18 years with secondary wave having the period of 3-4 years were found out. In HFRS the main cycle lasts for 16 years and has secondary rises every 3-4 years. In tularemia the main cycles last for 17 years; secondary rises and drops in morbidity were also found to occur every 3-4 years. In leptospirosis regular rises and drops in morbidity were found to occur every 4-5 years.

[The cyclicity and prognosis of shigellosis morbidity in Russia]. / Tsiklichnost' i prognozirovanie zabolevaemosti shigellezami v Rossii.

The epidemic process (EP) of shigellosis morbidity proceeds in cycles. As shown in this study, cyclic curves are the sum of polyharmonic fluctuations, being the axis of EP. The duration of one cycle is 18 years, and its configuration is stably retained for a long time. In Nizhny Novgorod shigellosis morbidity is strongly correlated with air temperature is summer at the peak of cyclic rises and moderately correlated in the years of low morbidity. In some cities of the Russian Federation fluctuations of air temperature have been found of occur synchronously with disturbances of the magnetic field of the earth. The character and stability of EP cycles provide grounds for the prognostication of shigellosis morbidity. The current cycle will end in the year 2000, and then natural preconditions for a new cyclic rise will appear.

[Typhoid fever in periods of wars and armed conflicts]. / Briushnoi tif v periody voin i vooruzhennykh konfliktov.

Study of military-epidemiological importance of typhoid-paratyphoid infections in military operations of XIX and XX centuries. Despite the research progress, and new means of special prevention, the problem has not been solved yet. In wars water becomes an important factor of typhoid spread in the troops and civil population, so water supply should be closely supervised by the civil authorities and military medics.

[The winter seasonality of intestinal infections]. / K voprosu o zimnei sezonnosti kishechnykh infektsii.

On the basis of various publications and his own researches the author analyses the possible causes of winter seasonal intestinal infections. It was found out that typical summer-autumn seasonal rate of bacterial intestinal infections turned into morbidity upgrowth in cold periods of year because of serious violations of hygienic regulations and sanitary rules of water supplies. The winter seasonal character of viral intestinal infections is basically connected with water-borne transmission due to high chlorine resistance of causative agents, especially at low temperatures. As for water-borne transmission, no principal differences were disclosed in seasonal characteristic features of typhoid and hepatitis A in the same social and natural conditions.

[The cause of the activation of an epidemic process of intestinal infections in the 70s]. / O prichine aktivizatsii épidemicheskogo protsessa kishechnykh infektsii v 70-e gody.

In the seventies a considerable rise in dysentery morbidity was observed in all republics of the USSR, in the whole of the USSR, in Bulgaria and in the German Democratic Republic. An increase in cholera morbidity in the world, as well as in the number of countries affected by this infection, was registered. A tendency towards a rise in virus hepatitis incidence was observed in the USSR. The dynamic study of the ozone content in the stratosphere, solar activity, disturbances in the magnetic field of the Earth, air temperature for the period of 1967-1980 was carried out. Strong and moderate correlation between dysentery and air temperature in summer was established. The maximum morbidity level in the USSR in 1972 was probably the consequence of unusually high air temperature in summer.