By Michael Marshall Hollow tubes attached to fossils of ancient animals are signs of the earliest known parasitesZhifei Zhang (Northwest University) Hundreds of fossilised animals seemingly covered in worm-like creatures are the oldest hard evidence of parasitism, dating from 512 million years ago when complex animals were still new. “We’re documenting the oldest case of…
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The agency has authority over meat, poultry and processed egg products. Published: April 01, 2026, 12:05 am The USDA’s Food Safety and Inspection Service has released a report on outbreaks it investigated during fiscal year 2025, showing that Listeria monocytogenes was the most frequent cause of outbreaks. The agency defines an outbreak as an incidence
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