Mara Ellison

Research correspondent.

Mara Ellison covers clinical research and public health for Clinical Observer. She writes from published studies, trial registries and health agencies, and links every source.

US measles outbreaks

US measles count reaches 3,659 as outbreaks spread

Pennsylvania has reported 835 cases and four deaths, but the CDC's national death count still lists one; South Carolina and Pennsylvania account for 44% of indigenous cases.

Illustration: child with measles rash hospital