Key result
Full genome sequencing identifies the 1980 Dominican Republic African swine fever virus as genotype I.
Why the study?
No full-length genome sequence was available from the 1978-1980 African swine fever virus outbreak in the Dominican Republic.
The complete genome sequence of the 1980 Dominican Republic ASFV isolate reveals it belongs to genotype I, closely related to contemporary Sardinia viruses.
Offers historical ASFV genotype I reference; leaves open evolutionary links to modern outbreaks and surveillance needs.
African swine fever is a lethal disease of domestic pigs, geographically expanding as a pandemic, that is affecting countries across Eurasia and severely damaging their swine production industry. After more than 40 years of being absent in the Western hemisphere, in 2020 ASF reappeared in the Dominican Republic and Haiti. The recent outbreak strain in the Dominican Republic has been identified as a genotype II ASFV a derivative of the ASF strain circulating in Asia and Europe. However, to date no full-length genome sequence from either the 1978-1980 Here we report the complete genome sequence of an African swine fever virus (ASFV) (DR-1980) that was previously isolated from blood collected in 1980 from the Dominican Republic at the end of the last outbreak, before culling of all swine on the island of Hispaniola and stored in the Plum Island Animal Disease Center ASFV repository. A contig representing the full-length genome (183,687 base pairs) was de novo assembled into a single contig using both Nanopore and Illumina sequences. DR-1980 was determined to belong to genotype I and, as determined by full genome comparison, a close relative to the sequenced Sardinia viruses that were causing outbreaks at this time.
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Spinard et al. (2023) studied African swine fever. Full genome sequencing was evaluated on Full genome sequence and phylogenetic analysis. The full-length genome of the 1980 Dominican Republic African swine fever virus isolate was sequenced, revealing it belongs to genotype I and is closely related to Sardinia viruses from that era.
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