RESEARCH PAPER
An attempt to control a natural focus of leptospirosis grippotyphosa by rodenticide – a long-term study (1977-2004)
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1
Department of Epidemiology, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic
 
2
Institute of Zoology, Slovak Academy of Sciences, Bratislava, Slovak Republic
 
 
Corresponding author
Pavol Bakoss   

Dr Sc., Department of Epidemiology, Faculty of Medicine, Comenius University, Špitálska Street 24, 813 72 Bratislava, Slovak Republic.
 
 
Ann Agric Environ Med. 2007;14(1):51-56
 
KEYWORDS
ABSTRACT
The purpose of the study was to suppress a known natural focus of field fever exerting an influence on animal hosts of leptospires – small terrestrial mammals (s.t.m.) by rodenticide. After repeated application of the zinc phosphide rodenticide, the s.t.m. were regularly live-trapped and checked for leptospirosis by dark-field microscopy and culture of their renal tissue and serological examination. Isolated leptospira strains were typed by help of rabbit factor sera. The deratization influenced the s.t.m. structure considerably: the proportion of the dominant Microtus arvalis subjects – the main reservoirs of Leptospira kirschneri serovar Grippotyphosa – were gradually and substantionally reduced and, contrarily, the percentage of the potetial hosts subjects – Clethrionomys glareolus and Apodemus fl avicollis – rose decisively over time. Changes in culture and serological positivity for leptospirosis of s.t.m. have also been enregistered. The highest original infestation of M. arvalis have slowly but strongly decreased while that of C. glareolus and A. fl avicollis has increased decisively and reached its maximum within the last years of investigation. It is probable that these two animal species have undertaken the leading role in the maintenance of the natural focus of the field fever. In other animal species analogous trends were not registered. Based on these long-term fi ndings, there exists the possibility to suppress only partially and temporarily the epizootic process of leptospirosis in a natural focus that can be desirable in some circumstances (building or free time activities, etc.).
 
REFERENCES (14)
1.
Ananyin VV (Ed.): Leptospiroses in Men and Animals. Medicina, Moscow 1971 (in Russian).
 
2.
Ananyin VV, Karaseva JV: Natural Foci of Leptospiroses. Medgiz, Moscow 1961 (in Russian).
 
3.
Dikken H, Kmety E: Serological typing methods of leptospiroses. In: Bergan T, Norris JR (Eds): Methods in Microbiology, 259-307. Academic Press, London, New York, San Francisco 1978.
 
4.
udecová H: Epizootologic Study of Domestic animals’ Leptospiroses Pertaining to the Region of the State Veterinary Institute of Bratislava. Dissertation. Institute of the Teaching and Education of Veterinarians, Košice 1997 (in Slovak).
 
5.
Jareková J, Bakoss P, Lysý J: Infl uence of rodenticide on natural focus of fi eld fever. Preliminary report. Biológia (Bratislava) 1993, 48, 279-281.
 
6.
Jareková J, Kmety E: Investigation of the evolution in natural foci of leptospiroses in selected localities of the lawlands Záhorie. Entomol. Problems (Bratislava) 1989, 19, 347-355 (in Slovak).
 
7.
Karaseva JV, Ananyin VV, Aguzarova MCh: Experience in reducing the natural leptopsirosis focus. Zh Mikrobiol Epidemiol Immunol 1965, 4, 65-69 (in Russian).
 
8.
Kmety E: Field voles as reservoirs of fi eld fever and other leptospiroses. Bratisl Lekár Listy 1951, 31, 118-125 (in Slovak).
 
9.
Kmety E, Bakoss P: To the question of the selection of antigens for micro-agglutination test in leptospiroses. Czechoslov Epidemiol 1978, 27, 247-252 (in Slovak).
 
10.
Lysý J, Řeháček J, Kocianová E, Kožuch O, Nosek J, Grulich I: Results of zoological and parasitological survey in some localities of the lawlands Záhorie in years 1977-1985. Entomol Problems (Bratislava) 1989, 19, 297-317 (in Slovak).
 
11.
Mikulecký M Sen., Bakoss P, Kmety E: Leptospiral infections in Slovakia 1949-1995: Trends and periodicities. In: Mikulecký M Sen. (Ed.): Proceedings of the 3rd Internat. Workshop Chronobiology and its roots, High Tatras, Slovakia 2-6 September 1997. Slovak Med. Soc., Bratislava 1997.
 
12.
Surveillance of Zoonoses. Slovak Republic. Leptospiroses 1970- 2004. State Veterinary and Food Administration, Bratislava 1970-2004.
 
13.
WHO: Human Leptospirosis: Guidance for Diagnosis, Surveillance and Control. Internat. Leptosp. Society, WHO 2003.
 
14.
Zaytsew SV, Chernukha JG: Possibility of survival of pathogenic leptospirae in the soil of a natural focus. In: Litvin VJ, Chernukha JG, Nikitina NA, Tartakovskij IS, Volk AV, Kotovich MN (Ed.): Ecology of Agents of Sapronoses, 85-94. Gamaleya Institute, Moscow 1988 (in Russian.
 
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ISSN:1232-1966
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