Some states with Republican-controlled legislatures want more data, while some controlled by Democrats want less, fearing it could be used to target patients or providers.
H5N1, an avian flu virus, has killed tens of thousands of marine mammals, and infiltrated American livestock for the first time. Scientists are working quickly to assess how it is evolving and how much of a risk it poses to humans.
Mammography can miss tumors in women with dense breasts, so their doctors often include ultrasound or M.R.I. scans. Patients often wind up paying the bill.
Apple said it removed WhatsApp and Threads from its China app offerings Friday on Beijing’s orders, amid technological tensions between the U.S. and China.