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Frozen for 5,000 years, this ice cave bacterium resists modern antibiotics
General • February 22, 2026
Deep
inside a
Romanian ice cave,
locked away in a 5,000-year-old layer of ice,
scientists have
uncovered a bacterium with a startling secret: it’s resistant to many modern antibiotics. Despite predating the antibiotic era, this cold-loving microbe carries more than 100 resistance-related genes and can survive drugs used today to treat serious infections like tuberculosis and UTIs.
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