Five feral European rabbits found dead in Washington state tested positive for rabbit hemorrhagic disease virus 2 (RHDV2) by qPCR. Genomic sequencing revealed a nearly identical RHDV2 strain present in the rabbits. The RHDV2 strain was determined to be divergent from previous United States detections, suggesting a novel RHDV2 incursion.
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Torrevillas et al. (2026) studied this question.
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