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SARS-CoV-2 in a Mink Farm in Italy: Case Description, Molecular and Serological Diagnosis by Comparing Different Tests.
Moreno, Ana; Lelli, Davide; Trogu, Tiziana; Lavazza, Antonio; Barbieri, Ilaria; Boniotti, MariaBeatrice; Pezzoni, Giulia; Salogni, Cristian; Giovannini, Stefano; Alborali, Giovanni; Bellini, Silvia; Boldini, Massimo; Farioli, Marco; Ruocco, Luigi; Bessi, Olivia; Maroni Ponti, Andrea; Di Bartolo, Ilaria; De Sabato, Luca; Vaccari, Gabriele; Belli, Gabriele; Margutti, Alberto; Giorgi, Maurilio.
  • Moreno A; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Lelli D; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Trogu T; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Lavazza A; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Barbieri I; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Boniotti M; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Pezzoni G; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Salogni C; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Giovannini S; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Alborali G; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Bellini S; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Boldini M; Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, IZSLER, Via Bianchi, 9, 25124 Brescia, Italy.
  • Farioli M; Direzione Generale Welfare, Regione Lombardia, Piazza Città di Lombardia 1, 20124 Milano, Italy.
  • Ruocco L; Direzione Generale Sanità Animale e Farmaci Veterinari, Ministero della Salute, Via Giorgio Ribotta, 5-00144 Roma, Italy.
  • Bessi O; Direzione Generale Sanità Animale e Farmaci Veterinari, Ministero della Salute, Via Giorgio Ribotta, 5-00144 Roma, Italy.
  • Maroni Ponti A; Direzione Generale Sanità Animale e Farmaci Veterinari, Ministero della Salute, Via Giorgio Ribotta, 5-00144 Roma, Italy.
  • Di Bartolo I; Department of Food Safety, Nutrition and Veterinary Public Health, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy.
  • De Sabato L; Department of Food Safety, Nutrition and Veterinary Public Health, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy.
  • Vaccari G; Department of Food Safety, Nutrition and Veterinary Public Health, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy.
  • Belli G; Dipartimento di Prevenzione Veterinario, ATS Valpadana, Via Belgiardino, 6-26100 Cremona, Italy.
  • Margutti A; Dipartimento di Prevenzione Veterinario, ATS Valpadana, Via Belgiardino, 6-26100 Cremona, Italy.
  • Giorgi M; Dipartimento di Prevenzione Veterinario, ATS Valpadana, Via Belgiardino, 6-26100 Cremona, Italy.
Viruses ; 14(8)2022 08 08.
Article in English | MEDLINE | ID: covidwho-1979412
ABSTRACT
This study described a SARS-CoV-2 infection in minks on an Italian farm. Surveillance was performed based on clinical examination and a collection of 1879 swabs and 74 sera from dead and live animals. The farm was placed under surveillance for 4.5 months, from the end of July 2020, when a man working on the farm tested positive by RT-PCR, till mid-December 2020 when all the animals were sacrificed. Clinical examination revealed no clinical signs or increased mortality rates attributable to SARS-CoV-2, while diagnostic tests detected only four weak PCR-positive samples, but 100% of sera were positive for SARS-CoV-2 anti-S antibodies. The phylogenetic analysis of two SARS-CoV-2 sequences from two minks and the sequence of the worker showed that they belonged to different clades. It could be therefore assumed that two distinct introductions of the virus occurred on the farm, and that the first introduction probably occurred before the start of the surveillance period. From the data collected, and especially from the detection of specific antibodies through the combination of different tests, it can be postulated that syndromic surveillance combined with genome detection by PCR may not be sufficient to achieve a diagnosis in asymptomatic animals. In particular, the serological approach, especially when using tests directed towards the S protein, may be useful for improving the traceability of virus circulation in similar environments.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Case report / Diagnostic study / Prognostic study / Randomized controlled trials Limits: Animals / Humans Language: English Year: 2022 Document Type: Article Affiliation country: V14081738

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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Case report / Diagnostic study / Prognostic study / Randomized controlled trials Limits: Animals / Humans Language: English Year: 2022 Document Type: Article Affiliation country: V14081738