Key result
New Betaarterivirus suid 1 clade causing Spanish outbreaks derives from a highly pathogenic Italian strain.
Identifies a new recombinant clade of Betaarterivirus suid 1 associated with severe outbreaks in Spain.
Signals emerging recombinant PRRSV-1 variants; leaves open questions on swine virulence, transmission, and vaccine updates.
This report describes 28 genome sequences from a new clade within subtype 1 ofBetaarterivirus suid 1, formerly known as porcine reproductive and respiratory syndrome virus 1. All share a potential recombinant pattern, with a highly pathogenic Italian strain as the putative major parental sequence and three other possible parents.
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Martín‐Valls et al. (2022) studied this question. Twenty-eight genome sequences of a new Betaarterivirus suid 1 clade causing severe outbreaks in Spain share a recombinant pattern primarily derived from a highly pathogenic Italian strain.
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