{ "story_id": "4d4a559e822bd10d2e09b08fe37c421a", "desk": "drm3", "revision": 1, "published_at": "2026-09-05T10:00:00.000Z", "content_hash": "44f8d959c89700f201b185448149788ee05122e99750bd7246ed8d78f74fc871", "hash_basis": "sha256 over `headline\\ndek\\nprose`, plus `\\n` + the canonical citations JSON when any source is placed, plus `\\n#blog` for blogs", "basis": { "headline": "Ancient Parchments Reveal 5,000-Year-Old Origin of Sheep Pox Virus", "dek": "Researchers extracted viral DNA from medieval manuscripts to trace sheep pox origins back 5,000 years.", "prose": "An international interdisciplinary team led by geneticist Kevin Daly from University College Dublin, including Barbara Richter and Herbert Weissenböck from Vetmed-Uni Wien, extracted genetic material from medieval parchment manuscripts to reconstruct the origins of sheep pox. [^1]\n\nAnalysis of parchment samples from manuscripts dating from the 8th to 15th centuries allowed researchers to trace the sheep pox virus back to approximately 3000 BCE. [^2]\n\nFor washing sheets, the expert suggests using detergent and a temperature of 60 °C or higher, provided the garment label allows it, to eliminate sweat, skin, dust, and microbes. [^3]\n\nMicrobiologist Primrose Freestone, a professor at the University of Leicester, stated in an article for The Conversation that sleeping environments accumulate sweat, body oils, skin cells, and microorganisms during the night. [^4]\n\nPrimrose Freestone explained that skin cells shed every night serve as food for dust mites, which thrive in warm and humid bedding environments. [^5]\n\nPrimrose Freestone recommends washing sheets and pillowcases once a week, reducing the interval to every three or four days if a person is sick, sweats heavily, or shares the bed with pets. [^6]\n\nResearchers extracted DNA from the animal skins used to make parchment by carefully rubbing the pages of old manuscripts and legal documents with erasers. [^7]\n\nThe reconstructed timeline of the virus coincides with archaeological findings, such as loom weights, indicating that people in Eurasian steppes began systematically raising sheep for wool production around 5000 years ago. 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