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] Analysis 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] For 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] Microbiologist 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] Primrose Freestone explained that skin cells shed every night serve as food for dust mites, which thrive in warm and humid bedding environments. ^[5] Primrose 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] Researchers extracted DNA from the animal skins used to make parchment by carefully rubbing the pages of old manuscripts and legal documents with erasers. ^[7] The 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. ^[8]