Urinary-tract infections were once easy to cure. Then they started becoming resistant to antibiotics

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A new software algorithm decides which patients are most likely to become infected with the virus. But this is not like other risk calculators, some experts say

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The agency said two patients received donated stool that had not been screened for drug-resistant germs, leading it to halt clinical trials until researchers prove proper testing procedures are in place

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Back near the start of this century, before the full damage of Andrew Wakefield’s debunked study linking measles vaccine and autism became clear and social networking sites turbo-charged the disruptive power of vaccine opponents, some experts believed the world was ready to rid itself of measles once and for all

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The latest and largest ever study presented last week at the Conference on Retroviruses and Opportunistic Infections did show a modest benefit. But confusingly, there was almost no decline in infections in the study group where it was most expected

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A 6-year-old boy from Oregon who had never received a single vaccine got a cut on his forehead while playing on his family’s farm in 2017. The wound was cleaned and sutured at home

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On March 7, 2016, doctors at the Cleveland Clinic introduced the nation to Lindsey McFarland, the first person to undergo a successful uterus transplant in the US. Within hours, however, McFarland was back in surgery: A life-threatening infection forced the organ’s removal, crushing hope she might one day give birth

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The FDA said that it had also written to 20 clinics that offer unapproved stem cell treatments, warning them that such products are generally regulated by the agency and encouraging the clinics to contact federal regulators before November 2020, when enforcement will tighten

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