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Chernyshev R, Igolkin A, van Schalkwyk A, Zinyakov N, Kolbin I, Shotin A, Korennoy F, Sprygin A, Mazloum A. A proposed update of African swine fever virus (genotype II) subgenotyping based on the central variable region (CVR) of Russian isolates. Arch Virol 2024; 169:147. [PMID: 38879716 DOI: 10.1007/s00705-024-06064-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 05/06/2024] [Indexed: 07/11/2024]
Abstract
African swine fever virus (ASFV) isolates are grouped and tracked through analysis of their central variable region (CVR) sequences. In this study, sequences of 70 ASFV isolates collected from different regions of Russia between 2018 and 2022 were analyzed. The analysis based on the CVR sequences indicated that the isolates belonged to three distinct groups. Group 1 shared 100% sequence identity to the isolate Georgia 2007/1. Group 5 had a C > A single-nucleotide polymorphism (SNP) at position 601, while group 13 is new and unique to the Far East of Russia, with five isolates from the Amur, Khabarovsk, and Primorsky regions. These findings demonstrate a new approach to phylogenomics and cladistics of ASFV isolates within genotype II on the basis of the CVR.
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Affiliation(s)
| | - Alexey Igolkin
- Federal Center for Animal Health, 600901, Vladimir, Russia
| | - Antoinette van Schalkwyk
- Agricultural Research Council-Onderstepoort Veterinary Institute, 100 Old Soutpan Road, 0110, Onderstepoort, South Africa
- Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, 7535, Bellville, South Africa
| | | | - Ivan Kolbin
- Federal Center for Animal Health, 600901, Vladimir, Russia
| | - Andrey Shotin
- Federal Center for Animal Health, 600901, Vladimir, Russia
| | - Fedor Korennoy
- Federal Center for Animal Health, 600901, Vladimir, Russia
| | | | - Ali Mazloum
- Federal Center for Animal Health, 600901, Vladimir, Russia.
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Pavone S, Bellini S, Iscaro C, Farioli M, Chiari M, Lavazza A, Ruocco L, Lelli D, Pintus G, Prati P, Feliziani F. Strategic Challenges to the Eradication of African Swine Fever Genotype II in Domestic Pigs in North Italy. Animals (Basel) 2024; 14:1295. [PMID: 38731299 PMCID: PMC11083415 DOI: 10.3390/ani14091295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
African swine fever (ASF) is a severe viral disease characterized by high lethality in suids and caused by the African Swine Fever Virus (ASFV). The ASF genotype I virus was introduced to Europe in 1957, marking the onset of the first European epidemic wave. In 2007, ASFV genotype II was detected in Georgia, affecting domestic pigs and wild boars before spreading to various European and extra-European countries, including Italy. The first case of ASFV in Italy was documented on 7 January 2022, in a wild boar in the Piedmont region. Since then, several ASFV-positive wild boar carcasses have been identified in the Piedmont and Liguria regions. By June 2023, ASFV had spread to Lombardy, one of the major pig-producing regions in northern Italy; the virus was first detected in early summer in wild boar carcasses. Two months later, it was diagnosed in a commercial pig farm as a consequence of the disease's spread amongst wild boars and an increase in the viral environmental load. This report aims to describe the features of ASFV domestic pig outbreaks that occurred in the Zinasco municipality (Lombardy) and the joint efforts to mitigate potential direct and indirect economic impacts on the Italian and global pig industry. The epidemiological investigation and the measures implemented, which were all performed according to national and European regulations, as well as exceptional ad hoc measures aimed at protecting the pig industry, are described in order to provide a practical and effective approach to combating ASF.
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Affiliation(s)
- Silvia Pavone
- National Reference Laboratory for Pestivirus and Asfivirus, Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche “Togo Rosati” (IZSUM), Via G. Salvemini, 1, 06126 Perugia, Italy; (C.I.); (F.F.)
| | - Silvia Bellini
- Istituto Zooprofilattico della Lombardia ed Emilia-Romagna, Via A. Bianchi 7/9, 25124 Brescia, Italy; (S.B.); (A.L.); (D.L.); (P.P.)
| | - Carmen Iscaro
- National Reference Laboratory for Pestivirus and Asfivirus, Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche “Togo Rosati” (IZSUM), Via G. Salvemini, 1, 06126 Perugia, Italy; (C.I.); (F.F.)
| | - Marco Farioli
- Regione Lombardia UO Veterinaria Direzione Generale Welfare, Piazza Città di Lombardia, 1, 20124 Milano, Italy; (M.F.); (M.C.)
| | - Mario Chiari
- Regione Lombardia UO Veterinaria Direzione Generale Welfare, Piazza Città di Lombardia, 1, 20124 Milano, Italy; (M.F.); (M.C.)
| | - Antonio Lavazza
- Istituto Zooprofilattico della Lombardia ed Emilia-Romagna, Via A. Bianchi 7/9, 25124 Brescia, Italy; (S.B.); (A.L.); (D.L.); (P.P.)
| | - Luigi Ruocco
- Ministero della Salute Direzione Generale della Sanità Animale e del Farmaco Veterinario, Ufficio III Sanità Animale e Gestione Operativa del Centro Nazionale di Lotta ed Emergenza Contro le Malattie Animali e Unità Centrale di Crisi, Viale Giorgio Ribotta, 5, 00144 Roma, Italy;
| | - Davide Lelli
- Istituto Zooprofilattico della Lombardia ed Emilia-Romagna, Via A. Bianchi 7/9, 25124 Brescia, Italy; (S.B.); (A.L.); (D.L.); (P.P.)
| | - Giorgia Pintus
- Local Health Authority (ATS), Via Indipendenza, 3, 27100 Pavia, Italy;
| | - Paola Prati
- Istituto Zooprofilattico della Lombardia ed Emilia-Romagna, Via A. Bianchi 7/9, 25124 Brescia, Italy; (S.B.); (A.L.); (D.L.); (P.P.)
| | - Francesco Feliziani
- National Reference Laboratory for Pestivirus and Asfivirus, Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche “Togo Rosati” (IZSUM), Via G. Salvemini, 1, 06126 Perugia, Italy; (C.I.); (F.F.)
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Dei Giudici S, Loi F, Ghisu S, Angioi PP, Zinellu S, Fiori MS, Carusillo F, Brundu D, Franzoni G, Zidda GM, Tolu P, Bandino E, Cappai S, Oggiano A. The Long-Jumping of African Swine Fever: First Genotype II Notified in Sardinia, Italy. Viruses 2023; 16:32. [PMID: 38257733 PMCID: PMC10820622 DOI: 10.3390/v16010032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
African swine fever (ASF) is a devastating infectious disease of domestic pigs and wild boar that is spreading quickly around the world and causing huge economic losses. Although the development of effective vaccines is currently being attempted by several labs, the absence of globally recognized licensed vaccines makes disease prevention and early detection even more crucial. ASF has spread across many countries in Europe and about two years ago affected the Italian susceptible population. In Italy, the first case of ASF genotype II in wild boar dates back to January 2022, while the first outbreak in a domestic pig farm was notified in August 2023. Currently, four clusters of infection are still ongoing in northern (Piedmont-Liguria and Lombardy), central (Lazio), and southern Italy (Calabria and Campania). In early September 2023, the first case of ASFV genotype II was detected in a domestic pig farm in Sardinia, historically affected by genotype I and in the final stage of eradication. Genomic characterization of p72, p54, and I73R/I329L genome regions revealed 100% similarity to those obtained from isolates that have been circulating in mainland Italy since January 2022 and also with international strains. The outbreak was detected and confirmed due to the passive surveillance plan on domestic pig farms put in place to provide evidence on genotype I's absence. Epidemiological investigations suggest 24 August as the most probable time of ASFV genotype II's arrival in Sardinia, likely due to human activities.
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Affiliation(s)
- Silvia Dei Giudici
- Laboratory of Virology, Deapartment of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, 07100 Sassari, Italy; (S.D.G.); (P.P.A.); (S.Z.); (M.S.F.); (G.F.); (A.O.)
| | - Federica Loi
- Osservatorio Epidemiologico Veterinario Regionale della Sardegna, Istituto Zooprofilattico Sperimentale della Sardegna, 09125 Cagliari, Italy;
| | - Sonia Ghisu
- Diagnostic Laboratories, Istituto Zooprofilattico Sperimentale della Sardegna, 08100 Nuoro, Italy; (S.G.); (F.C.); (D.B.); (E.B.)
| | - Pier Paolo Angioi
- Laboratory of Virology, Deapartment of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, 07100 Sassari, Italy; (S.D.G.); (P.P.A.); (S.Z.); (M.S.F.); (G.F.); (A.O.)
| | - Susanna Zinellu
- Laboratory of Virology, Deapartment of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, 07100 Sassari, Italy; (S.D.G.); (P.P.A.); (S.Z.); (M.S.F.); (G.F.); (A.O.)
| | - Mariangela Stefania Fiori
- Laboratory of Virology, Deapartment of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, 07100 Sassari, Italy; (S.D.G.); (P.P.A.); (S.Z.); (M.S.F.); (G.F.); (A.O.)
| | - Francesca Carusillo
- Diagnostic Laboratories, Istituto Zooprofilattico Sperimentale della Sardegna, 08100 Nuoro, Italy; (S.G.); (F.C.); (D.B.); (E.B.)
| | - Diego Brundu
- Diagnostic Laboratories, Istituto Zooprofilattico Sperimentale della Sardegna, 08100 Nuoro, Italy; (S.G.); (F.C.); (D.B.); (E.B.)
| | - Giulia Franzoni
- Laboratory of Virology, Deapartment of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, 07100 Sassari, Italy; (S.D.G.); (P.P.A.); (S.Z.); (M.S.F.); (G.F.); (A.O.)
| | | | - Paolo Tolu
- Azienda Sanitaria Locale della Sardegna, 08100 Nuoro, Italy; (G.M.Z.); (P.T.)
| | - Ennio Bandino
- Diagnostic Laboratories, Istituto Zooprofilattico Sperimentale della Sardegna, 08100 Nuoro, Italy; (S.G.); (F.C.); (D.B.); (E.B.)
| | - Stefano Cappai
- Osservatorio Epidemiologico Veterinario Regionale della Sardegna, Istituto Zooprofilattico Sperimentale della Sardegna, 09125 Cagliari, Italy;
| | - Annalisa Oggiano
- Laboratory of Virology, Deapartment of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, 07100 Sassari, Italy; (S.D.G.); (P.P.A.); (S.Z.); (M.S.F.); (G.F.); (A.O.)
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Pavone S, Iscaro C, Dettori A, Feliziani F. African Swine Fever: The State of the Art in Italy. Animals (Basel) 2023; 13:2998. [PMID: 37835604 PMCID: PMC10571570 DOI: 10.3390/ani13192998] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
African swine fever (ASF) is a severe viral disease of domestic pigs and Eurasian wild boars (Sus scrofa) caused by the African swine fever virus (ASFV). ASF is endemic in sub-Saharan Africa, where 24 genotypes of the virus have been reported. Between the late 1950s and the early 1980s, genotype I ASFV emerged in Europe, including Italy. In June 2007, a second ASF epidemic wave caused by genotype II was registered, involving several European and extra-European countries, including Italy in 2022. The present paper aims to provide the state of the art of ASF in Italy, describing the course of ASF in wild boars and domestic pigs as an example of multiple concurring different scenarios. Sardinia is coping with the last phase of the eradication of the disease by applying the exit strategy. Conversely, four clusters of infection located in North, Central, and South Italy are still ongoing. The unique and complex Italian experience in ASF-controlling may be useful to increase know-how on the efficacy of strategies and measures, as well as issues that could be further improved.
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Affiliation(s)
- Silvia Pavone
- National Reference Laboratory for Pestivirus and Asfivirus, Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche “Togo Rosati”, 06126 Perugia, Italy; (C.I.); (F.F.)
| | - Carmen Iscaro
- National Reference Laboratory for Pestivirus and Asfivirus, Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche “Togo Rosati”, 06126 Perugia, Italy; (C.I.); (F.F.)
| | - Annalisa Dettori
- Regional Veterinary Epidemiology Observatory, Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche “Togo Rosati”, 06126 Perugia, Italy;
| | - Francesco Feliziani
- National Reference Laboratory for Pestivirus and Asfivirus, Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche “Togo Rosati”, 06126 Perugia, Italy; (C.I.); (F.F.)
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