Here’s some of HealthDay’s top stories for Friday, July 30:

New data details Delta variant’s dangers. Fresh evidence shows the vaccinated may be spreading the variant as easily as the unvaccinated. The research was what prompted the U.S. Centers for Disease Control and Prevention to reverse its mask guidance for the vaccinated earlier this week. Read more

Could COVID accelerate Alzheimer’s disease? Added to other ills linked to SARS-CoV-2, new research suggests that COVID patients show evidence of neurological injury and even a rise in tau protein ‘tangles’ within the brain — a hallmark of Alzheimer’s disease. Read more

As deductibles rise, more people with diabetes skip their meds. About half of Americans with private insurance are now enrolled in high-deductible plans. New research finds people with diabetes who are covered by such plans are 28% more likely to skip needed medicines. Read more