How the Delta Variant Is Changing the U.S. Forecast for COVID-19
WEDNESDAY, Aug. 4, 2021 (HealthDay News) — COVID-19 vaccines are helping protect the unvaccinated as the new Delta strain surges across the United States, but experts say its high infectiousness could mean even more people need to take the jab to achieve true herd immunity. Tracking data shows COVID cases aren’t spiking as much in […]