A vial of blood is put into a tube rack, with medical images of a brain in the background.
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Alzheimer’s blood tests are getting better, but still have a ways to go

Alzheimer’s disease is hard to diagnose. But proteins in the blood might provide clarity. A series of recent findings, presented at the annual Alzheimer’s Association International Conference in Philadelphia and in research papers, raise the possibility of a simple blood draw to help doctors figure out if a person’s cognitive problems are caused by Alzheimer’s […]

The hands of a health care worker wearing gloves hold a vial and a swab that
Environment

Why mpox is a global health emergency — again

For the second time, the World Health Organization has declared that mpox, formerly called monkeypox, is a global health emergency. In 2022, global spread of the virus, which causes rashes, fevers, muscle aches and other symptoms, led to the first emergency declaration (SN: 7/22/22). That version of the virus, called clade II, is still causing […]