Read about medical advances and research in Seattle and worldwide. Topics include treatments; surgery; diseases such as Zika; studies of the human brain, heart and cancer; mental health; drugs and vaccinations; and Medicare, the Veterans Administration (VA) and the Affordable Care Act, aka Obamacare. Institutions include the Hutch, UW Medicine, Harborview, Virginia Mason, Group Health and Swedish.

Children report sickness after swimming at Lake Sammamish beach

Public-health officials have temporarily closed Tibbetts Beach to investigate the potential outbreak. It’s unclear when the swimming spot will reopen.

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