PubMed Health⌕ Search

Biomedical subjects

P Bakoss

Publications and source records attributed to P Bakoss.

At least 19 recordsLinked to original sources

[Infectious diseases--a permanent scourge to mankind?].

A synopsis of basic causes of the extended number of infectious diseases and changes of their clinical and epidemiological features is brought about in the article. The question is of changes of the pathogenic agents, their hosts and environment. Reasons of further evolution of infectious diseases are given.

Communicable Diseases, Emerging↗

[Changes in the epidemiology of human leptospirosis in the Slovak Republic].

BACKGROUND: The epidemiologic patterns of infectious diseases are liable to change in the course of time. References to such changes in leptospirosis are very rare and of low systematic value. OBJECTIVES: The study is aimed at the detection of changes in the epidemiology of leptospirosis within the 20 years in Slovakia. METHODS: Basic epidemiologic characteristics of leptoospirosis were compared within two chronological periods. 598 registered cases were analyzed during the first period (1970-1976), and 200 cases of leptospirosis were analysed during the second period (1986-1991). MAIN RESULTS: The second period yielded a decrease in total incidence to approximately 50% (yearly average was 0.9/10(5) of the population). At the same time the cyclic character of morbidity has almost entirely disappeared. The incidence of leptospirosis has significantly decreased in the group of population between 40 and 59 years of age, thus causing a particular shift in morbidity towards the younger population. Cases of leptospirosis caused by L. tarassovi and L. canicola ceased to occur, however one case of infection caused by L. hardjo has been registered in the Slovak population. A significant decrease in the incidence of diseases caused by the Sejroe group serovars was detected, especially in housewives, retired people, industrial and agricultural workers. In contrast to the latter, the proportion of leptospirosis cases caused by L. icterohaemorrhagiae/copenhageni increased particularly in pupils and students, as well as those caused by L. pomona in slaughter-house workers. Consequently, the most dominating disease is represented by field fever (L. gripotyphosa), the second highest incidence is ascribed to Weil disease (L. icterohaemorrhagiae/copenhageni), while the incidence of infections caused by the group of Sejroe serovars dropped from the first to the fourth place. The possible reasons of these changes are presented. No changes in the incidence of leptospirosis according to sex and seasonal occurrence were registered. CONCLUSION: The results of this study are in accordance with the current knowledge of the development of epidemiologic signs of infectious diseases, including leptospirosis. The results provide a pattern of the current situation in the field of leptospirosis epidemiology in the territory of Slovakia and emphasize the importance of systematic surveillance enabling the assessment of appropriate measures suppressing these infections. (Fig. 7, Ref. 7.).

Adolescent↗

A new serovar in the Grippotyphosa serogroup comprising leptospiral isolates from different regions.

Pulsed-field gel electrophoresis (PFGE) studies performed with leptospiral isolates led us to suspect the existence of a new serovar in the Grippotyphosa serogroup. The results obtained with reference serological techniques used in leptospiral identification, including cross-agglutination absorption and monoclonal antibody techniques, confirmed the existence of a new serovar exemplified by strain Dadas I. Four other isolates from different regions of the world were submitted for identification by PFGE and produced NotI restriction patterns similar to that of strain Dadas I. Our data demonstrate the power of PFGE for identifying leptospiral isolates. The name dadas is proposed for the new serovar.

Agglutination Tests↗

The prevalence of small terrestrial mammals infected with tick-borne encephalitis virus and leptospirae in the foothills of the southern Bavarian forest, Germany.

In the district of Grafenau/Freyung (Bavaria, Germany), 266 specimens of small terrestrial mammals of 8 species were captured using live traps. From these mammals, Apodemus flavicollis (42.1%) and Clethrionomys glareolus (39.5%) were prevalent. All animals were tested for neutralizing antibodies to tick-borne encephalitis (TBE) virus and agglutinating antibodies to leptospirae. Seropositivity against TBE virus was 14.0% and against leptospirae 7.9%, respectively. Seropositivity to leptospirae appeared to be primarily to Leptospira grippotyphosa, less to Australis and occasionally to Javanica serovars. Only one A. flavicollis specimen was positive to both pathogens tested. The parasitocoenosis of trapped micromammals with ectoparasites consisted of 69.5% from ticks (mainly Ixodes ricinus, less from I. trianguliceps), 16.1% of mites (primarily Laelaps agilis) and 14.3% of fleas (mostly Ctenophthalmus agyrtes).

Animals↗

[Infectious diseases yesterday and today].

The authors present examples demonstrating that in the last decades we witnessed the discovery of new nosological units and their infectious agents, the detection of the infectious origin of "old" diseases the aetiology of which was still recently obscure, infectious attacks of people by diseases which were considered animal infectious only, as well as the more frequent incidence of opportune infections due to impairment of the immune state of the human organism. These changes have many reasons such as the development of properties of microorganisms, lifestyle changes of the human population, advances in medicine, and last but not least improving microbiological diagnosis. Attention is drawn to the fact that even in a time when so-called diseases of civilization are in the foreground of interest our awareness of infectious diseases must not slacken. Only all-round international surveillance can prove successful.

Humans↗

[Leptospirosis in dogs in Slovakia].

Out of 571 serologically investigated dogs from Bratislava and all regions of Slovakia and Moravia, 26.1% presented antibodies reacting with leptospiral antigens. The lowing seropositivity in dogs from Bratislava was found in lap dogs--11.1%, the highest one in farm dogs--35.3% (Tab. I). The seropositivity of police dogs from different regions of Slovakia and Moravia varied from 24.0% to 47.6% (Tab. II). The age of dogs progressing, their seropositivity rose from 3.1% in animals younger than one year to 33.3% in those aged seven years and in older ones (Tab. III). The predominant serovars causing infections of dogs were L. grippotyphosa (58.9% of infections) and serovars of both Sejroe (21.0%) and Icterohaemorrhagiae groups (15.3%). The serovars bratislava/jalna, pomond/mozdok and tarassovi were only rarely involved in these infections, canicola and arborea only exceptionally (Tab. IV). At present, in the Czechoslovak conditions the dogs do not play a significant role as reservoirs of human leptospirosis, and the predominant serovars may only cause irregular and short-time lasting leptospiruria. This is why the reasonableness of actual vaccination of dogs, possibly with the exception of the vaccination against Weil's disease, is doubtful. Dog is a good indicator of the distribution of different leptospiral serovars in its environment. It seems reasonable to practice occasionally serological investigations of these animals in order to detect possible changes in infecting leptospiral serovars. Consequently, adequate epizootological measures could be taken (e. g. modification of the composition of a leptospiral vaccine for dogs).

Animals↗