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Ability of different matrices to transmit African swine fever virus

Authors :: EFSA Panel on Animal Health and Welfare (AHAW)
Soren Saxmose Nielsen
Julio Alvarez
Dominique Joseph Bicout
Paolo Calistri
Elisabetta Canali
Julian Ashley Drewe
Bruno Garin‐Bastuji
Jose Luis Gonzales Rojas
Christian Gortázar Schmidt
Mette Herskin
Miguel Ángel Miranda Chueca
Virginie Michel
Barbara Padalino
Paolo Pasquali
Liisa Helena Sihvonen
Hans Spoolder
Karl Stahl
Antonio Velarde
Arvo Viltrop
Christoph Winckler
Anette Boklund
Anette Botner
Andrea Gervelmeyer
Olaf Mosbach‐Schulz
Helen Clare Roberts
Nielsen S.S.
Alvarez J.
Bicout D.J.
Calistri P.
Canali E.
Drewe J.A.
Garin-Bastuji B.
Gonzales Rojas J.L.
Gortazar Schmidt C.
Herskin M.
Miranda Chueca M.A.
Michel V.
Padalino B.
Pasquali P.
Sihvonen L.H.
Spoolder H.
Stahl K.
Velarde A.
Viltrop A.
Winckler C.
Boklund A.
Botner A.
Gervelmeyer A.
Mosbach-Schulz O.
Roberts H.C.
Producció Animal
Benestar Animal
Source :: EFSA Journal, EFSA Journal, Vol 19, Iss 4, Pp n/a-n/a (2021), Nielsen, S S, Alvarez, J, Bicout, D J, Calistri, P, Canali, E, Drewe, J A, Garin-Bastuji, B, Gonzales Rojas, J L, Gortázar Schmidt, C, Herskin, M S, Miranda Chueca, M Á, Michel, V, Padalino, B, Pasquali, P, Sihvonen, L H, Spoolder, H, Stahl, K, Velarde, A, Viltrop, A, Winckler, C, Boklund, A, Botner, A, Gervelmeyer, A, Mosbach-Schulz, O, Roberts, H C & EFSA Panel on Animal Health and Welfare (AHAW) 2021, ' Ability of different matrices to transmit African swine fever virus ', E F S A Journal, vol. 19, no. 4, e06558, pp. 1-109 . https://doi.org/10.2903/j.efsa.2021.6558, IRTA Pubpro. Open Digital Archive, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Nielsen, S S, Alvarez, J, Bicout, D J, Calistri, P, Canali, E, Drewe, J A, Garin-Bastuji, B, Rojas, J L G, Schmidt, C G, Herskin, M, Chueca, M A M, Michel, V, Padalino, B, Pasquali, P, Sihvonen, L H, Spoolder, H, Stahl, K, Velarde Calvo, A, Viltrop, A, Winckler, C, Boklund, A, Botner, A, Gervelmeyer, A, Mosbach-Schulz, O, Roberts, H C & EFSA Panel on Animal Health and Welfare (AHAW) 2021, ' Ability of different matrices to transmit African swine fever virus ', EFSA Journal, vol. 19, no. 4, 06558 . https://doi.org/10.2903/j.efsa.2021.6558
Publication Year :: 2021
Publisher :: John Wiley and Sons Inc., 2021.
Abstract: This opinion assesses the risk posed by different matrices to introduce African swine fever virus (ASFV) to non‐affected regions of the EU. Matrices assessed are feed materials, enrichment/bedding materials and empty live pigs transport vehicles returning from affected areas. Although the risk from feed is considered to be lower than several other pathways (e.g. contact with infected live animals and swill feeding), it cannot be ruled out that matrices assessed in this opinion pose a risk. Evidence on survival of ASFV in different matrices from literature and a public consultation was used in an Expert Knowledge Elicitation (EKE) on the possible contamination of products and traded or imported product volumes used on pig farms. The EKE results were used in a model that provided a risk‐rank for each product's contamination likelihood (‘q’), its trade or import volume from affected EU or Eurasian areas (N) and the modelled number of potentially infected pig farms (N × q). The products ranking higher regardless of origin or destination were mash and pelleted compound feed, feed additives and cereals. Bedding/enrichment materials, hydrolysed proteins and blood products ranked lowest regardless of origin or destination. Empty vehicles ranked lower than compound feed but higher than non‐compound feed or bedding/enrichment material. It is very likely (95–99% certainty) that compound feed and cereals rank higher than feed materials, which rank higher than bedding/enrichment material and forage. As this is an assessment based on several parameters including the contamination and delivery to a pig farm, all of which have the same impact on the final ranking, risk managers should consider how the relative rank of each product may change with an effective storage period or a virus inactivation step.<br />This publication is linked to the following EFSA Supporting Publications articles: http://www.efsa.europa.eu/en/supporting/pub/9993e and http://www.efsa.europa.eu/en/supporting/pub/9994e