Geographical distribution and prevalence of Borrelia burgdorferigenospecies in questing Ixodes ricinusfrom Romania: A countrywide study

Autor: Kalmár, Zsuzsa, Mihalca, Andrei D., Dumitrache, Mirabela O., Gherman, Călin M., Magdaş, Cristian, Mircean, Viorica, Oltean, Miruna, Domşa, Cristian, Matei, Ioana A., Mărcuţan, Daniel I., Sándor, Attila D., D’Amico, Gianluca, Paştiu, Anamaria, Györke, Adriana, Gavrea, Raluca, Marosi, Béla, Ionică, Angela, Burkhardt, Etelka, Toriay, Hortenzia, Cozma, Vasile
Zdroj: Ticks and Tick-borne Diseases; September 2013, Vol. 4 Issue: 5 p403-408, 6p
Abstrakt: The paper reports the prevalence and geographical distribution of Borrelia burgdorferisensu lato (s.l.) and its genospecies in 12,221 questing Ixodes ricinusticks collected at 183 locations from all the 41 counties of Romania. The unfed ticks were examined for the presence of B. burgdorferis.l. by PCR targeting the intergenic spacer 5S–23S. Reverse line blot hybridization (RLB) and restriction fragment length polymorphism (RFLP) analysis were performed for identification of B. burgdorferigenospecies. The overall prevalence of infection was 1.4%, with an average local prevalence between 0.75% and 18.8%. B. burgdorferis.l. was found in ticks of 55 of the 183 localities. The overall prevalence B. burgdorferis.l. in ticks in the infected localities was 3.8%. The total infection prevalence was higher in female ticks than in other developmental stages. Three Borreliagenospecies were detected. The most widely distributed genospecies was B. afzelii, followed by B. gariniiand B. burgdorferisensu stricto (s.s.). The study is the first countrywide study and the first report of B. burgdorferis.s. in Romania. The distribution maps show that higher prevalences were recorded in hilly areas, but Lyme borreliosis spirochetes were also present in forested lowlands, albeit with a lower prevalence.
Databáze: Supplemental Index