2017
Francisella tularensis prevalence and load in Dermacentor reticulatus ticks in an endemic area in Central Europe
HUBÁLEK, Zdeněk a Ivo RUDOLFZákladní údaje
Originální název
Francisella tularensis prevalence and load in Dermacentor reticulatus ticks in an endemic area in Central Europe
Název česky
Prevalence a "nálož" Francisella tularensis v klíšťatech Dermacentor reticulatus v endemické oblasti střední Evropy
Autoři
HUBÁLEK, Zdeněk a Ivo RUDOLF
Vydání
MEDICAL AND VETERINARY ENTOMOLOGY, HOBOKEN, WILEY, 2017, 0269-283X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 1.688
Označené pro přenos do RIV
Ne
Organizační jednotka
Přírodovědecká fakulta
UT WoS
Klíčová slova česky
klíšťata+ nálož patogena; tularemie
Klíčová slova anglicky
Ixodid ticks; pathogen load; tularaemia
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 9. 4. 2020 14:56, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
A total of 7778 host-seeking adult Dermacentor reticulatus (Ixodida: Ixodidae) ticks were examined for the prevalence of Francisella tularensis holarctica (Thiotrichales: Francisellaceae) in a natural focus of tularaemia in the floodplain forest-meadow ecosystem along the lower reaches of the Dyje (Thaya) river in South Moravia (Czech Republic) between 1995 and 2013. Ticks were pooled (10 specimens per pool) and their homogenates inoculated subcutaneously in 4-week-old specific pathogen-free mice. Dead mice were sectioned, their spleens cultivated on thioglycollate-glucose-blood agar and impression smears from the spleen, liver and heart blood were Giemsa-stained. Sixty-four pools were positive for F.tularensis: the overall minimum infection rate (MIR) was 0.82%. Overall MIRs for the 4714 female and 3064 male D.reticulatus examined were 0.89 and 0.72%, respectively; MIRs fluctuated across years between 0.0 and 2.43%. The estimated bacterial load in infected ticks varied from 0.84 to 5.34 log(10) infectious F.tularensis cells per tick (i.e. from about seven to 220000 cells). Ticks with low loads were more prevalent; more than 1000 infectious cells were detected in 24 ticks (0.3% of all ticks and 37.5% of infected ticks). Monitoring of D.reticulatus for the presence and cell numbers of F.tularensis may be a valuable tool in the surveillance of tularaemia.