Fear of the highly transmittable Delta coronavirus variant is causing every US state to report an increase in its average number of vaccinations. The national rate of people receiving their first dose is up by more than 73 percent, and last week vaccination rates increased by more than 25 percent in adults and nearly 20 percent in ages 12-17, according to the Centers for Disease Control and Prevention (CDC) data. The uptick pushed the national vaccination average to more than 637,000 doses ad...