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Low risk of Lyme borreliosis in a protected area on the Tyrrhenian coast, in central Italy

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Abstract

A comprehensive Lyme borreliosis risk assessment process was applied in S. Rossore Estate, on the Tyrrhenian coast, near Pisa, Italy. Host-seeking Ixodes ricinus nymphs peaked in May in oak-dominated deciduous wood (median, Q1–Q3, number of nymphs/50 m dragging = 4.5, 2.5–8), whereas host-seeking larvae peaked in August in the same habitat type (6.0, 4–17/50 m dragging). Prevalence of I. ricinus infestation was 88.9% in wild rodents (n = 11), 64.3% in fallow deer (n = 28) and 0.0% in wild boars (n = 5). Borrelia burgdorferi sensu lato was not isolated from rodents' organs, and from 80 I. ricinus nymphs and 50 adults. Moreover, PCR for B. burgdorferi sl carried out on 110 nymphs and 12 adult ticks also gave negative results. Forest workers were at higher risk of tick bite than other Estate employees (relative risk (RR): 1.7, p = 0.02). In spite of high levels of tick exposure, B. burgdorferi sl specific antibodies were not detected in sera from Estate personnel (n = 30) and sentinel animals (dogs, n = 23, fallow deer, n = 61).

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Authors and Affiliations

  1. Dipartimento di Produzioni Animali, Epidemiologia, Ecologia, Università degli Studi di Torino, Italy

    Alessandro Mannelli, Sabrina Rossi & Sergio Rosati

  2. Dipartimento di Patologia Animale, Università degli Studi di Pisa, Italy

    Domenico Cerri & Francesco Tolari

  3. Istituto Reumatologico E. Bruzzone, Università degli Studi di Genova, Italy

    Laura Buffrini, Tiziana Arata, Marco Innocenti, Maria Clara Grignolo & Gerolamo Bianchi

  4. Istituto di Parassitologia, Università di Roma “La Sapienza”, Rome, Italy

    Albertina Iori

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  1. Alessandro Mannelli
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  11. Francesco Tolari
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Mannelli, A., Cerri, D., Buffrini, L. et al. Low risk of Lyme borreliosis in a protected area on the Tyrrhenian coast, in central Italy. Eur J Epidemiol 15, 369–375 (1999). https://doi.org/10.1023/A:1007535313763

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