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Biomedical subjects

M I Narkevich

Publications and source records attributed to M I Narkevich.

At least 19 recordsLinked to original sources
PubMed1993

The seventh pandemic of cholera in the USSR, 1961-89.

Over the period 1961-89 a total of 1,713,057 cases of cholera were reported to WHO from 117 countries in all continents. The course of the epidemic fell into three periods: in period I (1961 to 1969), 24 countries (predominantly in Asia) reported about 419,968 cholera cases; in period II (1970 to 1977), 73 countries from Asia, Africa, Europe, and the Americas reported 706,261 cases; and in period III (1978 to 1989), 83 countries reported 586,828 cases. The global epidemic was at its most severe in 1967-74. Subsequently morbidity declined and up to 1989 had remained high and stable, with 44,000-52,000 cases per annum. In the USSR 10,723 cholera cases and carriers were reported between 1965 and 1989 from 11 republics (but not Latvia, Lithuania, Estonia, or Armenia). In 1965 and 1970-74 large-scale outbreaks of imported cholera were characteristic of the epidemic in the USSR. Thereafter morbidity declined, and sporadic cases were reported along with environmental, predominantly nontoxigenic strains of cholera vibrio. Most of the outbreaks in the 1970s were waterborne, and virulent strains containing the vct-gene were isolated from samples of water. Large-scale outbreaks continued that were associated with seafood and dairy produce that were contaminated with cholera vibrio. Clinical cases of cholera as well as a considerable number of carriers of avirulent nontoxigenic strains were reported. The epidemiological situation in the USSR is unstable, with cases of cholera and virulent strains from surface water being reported every year.(ABSTRACT TRUNCATED AT 250 WORDS)

Carrier State↗
PubMed1991

[The 7th cholera pandemic in the world and the USSR].

1,713,057 cases of cholera were registered in the world during the seventh pandemic of the disease at the period of 1961-1989. The pandemic still continues, being the most prolonged pandemic in comparison with earlier ones. During the period of the seventh pandemic 10,723 cases of cholera were registered in the USSR. Great outbreaks occurred in 1965 and 1970-1974. At present sporadic cases of cholera can be registered, and wide circulation of mainly avirulent, nontoxigenic strains of cholera vibrios in environmental objects is characteristic of the epidemic situation.

Carrier State↗
PubMed1991

[The practical performance of cholera control measures in the USSR during the 7th pandemic].

The critical analysis of anticholera measures carried out in the USSR since 1965 till the present time is presented. The grounds for the abolition or considerable reduction of a number of measures are considered from the viewpoint of their scientific substantiation, the adequacy of means and efforts spent for their realization and their antiepidemic effectiveness. Special attention is paid to the necessity of differentiated approach to these measures, depending on concrete local climatic and geographical, sanitary, hygienic and other factors which determine the epidemic potential of a given administrative territory.

Anti-Bacterial Agents↗
PubMed1990

[Infectious disease mortality in the USSR].

In recent decades infectious and parasitic diseases (class 1 according to the International Classification of Diseases-9) constitute 2-3% of causes in the total morbidity structures in the USSR. The main causes of death among diseases of class 1 are tuberculosis (37%), acute enteric infections (30%), septicemia (11%), viral hepatitides (11%), meningococcal infection (4%), measles (2%). The main groups are children aged up to 2 years (48% of fatal cases of diseases belonging to class 1). The territorial irregularity of mortality indices has been revealed.

Age Factors↗
PubMed1989

[The epidemiological problems of viral non-A, non-B hepatitis with a fecal-oral mechanism of infection transmission].

The results of the study of the epidemiological regularities of viral hepatitis non-A, non-B with the fecal-oral mechanism of the transfer of infection in one of the regions of the Turkmenian SSR are presented. These results have been confirmed by serological and virological laboratory methods. The territories, groups of the population (age groups) and the time of the maximum epidemic risk of infection have been determined. The main (primary) role of the water route (polluted ground water) in the spread of this infection has been proved.

Age Factors↗
PubMed1989

[Condition of morbidity of viral hepatitis and ways of improving prevention of these infections among the populace of the USSR].

In this article the state of morbidity in hepatitis A and B in the USSR as a whole and in individual republics is analyzed, the causes of the preservation of high morbidity levels in some regions of the USSR are shown, the specific epidemiological features of fecal-oral hepatitis non A, non B in the republics of Central Asia are pointed out and the ways for improving separately the prophylaxis of hepatitis A and hepatitis B are considered.

Hepatitis, Viral, Human↗
PubMed1989

[Condition of morbidity and prevention of acute intestinal infections in the USSR].

The article presents original materials characterizing morbidity in acute enteric infections, such as typhoid fever and other Salmonella infections, dysentery, in the USSR. Morbidity registered in recent years is shown to be the consequence of the unsatisfactory solution of problems connected with supplying the population with epidemiologically safe water and foodstuffs. The decisive role played by sanitary and hygienic measures in the prevention and control of acute enteric infections is emphasized.

Acute Disease↗
PubMed1987

[Factors in the spread of diseases caused by nonagglutinating vibrios studied by using the data from strain serotyping].

The method of the serotyping of strains was used for the epidemiological evaluation of the role of different factors in the transfer of infective agents in 147 cases of diseases and carrier state, caused by NAG vibrios, in Karakalpakia. Out of 150 NAG vibrio strains, 136 strains were serotyped and classified with 26 serovars. The strains were found to belong mostly to serovars 47, 37, 5 and 6 (42.0%). Most of the infected persons (58.5%) used water from open water bodies for household purposes. The role of water factor in the spread of infection was confirmed by a wide spectrum of serologic variants, a low index of the focal outbreaks (1.02), and sporadic pattern of infection. No group morbidity or toxinfection-type outbreaks were recorded.

Acute Disease↗