Case Report: Molecular Detection of Dirofilaria repens in an Italian Patient after a Stay in Tanzania

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  • 1 Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia, Italy;
  • 2 Dipartimento d Medicina Veterinaria, Università degli Studi di Bari, Valenzano, Italy;
  • 3 Laboratorio di Virologia U.O.C. Microbiologia e Virologia AOU Policlinico, Bari, Italy;
  • 4 Laboratorio di Virologia U.O.C. Microbiologia e Virologia, Dipartimento Interdisciplinare di Medicina, Università degli Studi di Bari, Valenzano, Italy

A 35-year-old man was admitted to a hospital in the south of Italy because of a periocular nodule and subpalpebral edema. The patient reported having been stayed in Tanzania five months before. Hematologic parameters were within the normality range, the Acanthocheilonema viteae ELISA did not detect significant levels of antifilarial IgG, and no further symptoms were described. The surgical inspection of the nodule led to the isolation of two filarioid parasites, identified as Dirofilaria repens by SEM, and then by molecular assays. Knott’s test did not reveal microfilaremia, whereas loop-mediated isothermal amplification and PCR detected D. repens DNA. The patient was treated with doxycycline, and he was found no more positive at the follow-up.

Author Notes

Address correspondence to Donato Antonio Raele, Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Via Manfredonia, 20, Foggia 71121, Italy. E-mail: donatoantonio.raele@izspb.it

Financial support: The study was funded with own resources, and no specific funds were received.

Authors’ addresses: Donato Antonio Raele, Gianfranco LaBella, Ilaria Vasco, Giovanna La Salandra, and Maria Assunta Cafiero, Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia, Italy, E-mails: donatoantonio.raele@izspb.it, gianfranco.labella@izspb.it, ilaria.vasco@izspb.it, giovanna.lasalandra@izspb.it, and mariaassunta.cafiero@izspb.it. Nicola Pugliese, Dipartimento di Medicina Veterinaria, Università degli Studi di Bari, Valenzano, Italy, E-mail: nicola.pugliese@uniba.it. Agata Calvario, Laboratorio di Virologia U.O.C. Microbiologia e Virologia AOU Policlinico, Bari, Italy, E-mail: agata58calvario@gmail.com. Maria Scarasciulli, Laboratorio di Virologia U.O.C. Microbiologia e Virologia, Dipartimento Interdisciplinare di Medicina, Università degli Studi di Bari, Valenzano, Italy, E-mail: maria.scarasciulli@uniba.it.

These authors contributed equally to this work.

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