{
  "id": 8740239,
  "title": "Disease investigation in a New Zealand high-health pig herd reveals a divergent porcine adenovirus",
  "url": "https://urgent.news/2026/09/20/disease-investigation-in-a-new-zealand-high-health-pig-herd-reveals-a",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-20T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.14.751650v1?rss=1"
  },
  "original_language": "en",
  "account": "An investigation into a disease outbreak among a high-health pig herd in New Zealand has revealed the presence of a previously unknown viral infection. The outbreak, which affected an immunologically naive group of 320 sows, was characterized by symptoms such as loss of appetite, lethargy, skin inflammation, and an elevated number of stillborn piglets. Upon closer examination, scientists discovered intranuclear inclusion bodies within endothelial cells of an affected piglet, a clear indication of a systemic viral infection.\n\nThrough a process called total RNA sequencing, researchers analyzed tissues from the affected piglet and the aborted fetuses. The metatranscriptomic analysis detected a high abundance of adenovirus in multiple piglet and aborted fetus tissues. By de novo assembly, they were able to construct a complete 27,685-nucleotide genome of the virus. Phylogenetic analysis placed the virus within the genus Mastadenovirus, but it formed a distinct, divergent lineage different from all previously identified porcine adenoviruses. Despite its genetic differences, the virus retained the typical organizational structure of mastadenoviruses.\n\nThe researchers found no other viral pathogens associated with the outbreak, aside from a low abundance of porcine kobuvirus in the piglet's small intestine and colon. The high viral abundance and its widespread distribution across multiple tissues, along with the presence of adenoviral inclusion bodies in the affected piglet, strongly suggest that this novel adenovirus played a role in the disease outbreak. These findings broaden our understanding of the diversity of porcine adenoviruses and suggest that previously unrecognized adenovirus lineages might contribute to reproductive and neonatal diseases when introduced into immunologically naive high-health herds.",
  "summary": "Porcine adenoviruses are common in domestic pigs and are generally regarded as low-pathogenicity viruses associated with mild or subclinical infections. However, their diversity, host associations and disease potential remain poorly understood. Here, we investigated a disease outbreak in an immunologically naive 320-sow high-health hysterectomy-derived pig herd in New Zealand. The outbreak was…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}