As the Delta variant of COVID-19 – the highly transmissible and concerning strain – continues to spread throughout the country, Pennsylvania remains one of the most protected states with the highest vaccination rates among adults, write Erika Fry and Nicolas Rapp for Fortune.
So far, studies have shown that vaccines are effective against this variant. This makes those unvaccinated most vulnerable to the Delta strain – which currently represents 13.1 percent of all new cases in Pennsylvania and the surrounding region.
Unfortunately, the number of people who have not yet been immunized remains stubbornly high in many states despite the abundant supply of vaccines in the country.
Through June 22, at least one shot of the COVID-19 vaccine was administered to 177.9 million people, or 53.6 percent of the nation’s population. Meanwhile, 150.8 million people have received both doses.
Nationwide, 65.6 percent of all adults have received at least one shot. This rate varies widely between states, though
Pennsylvania has one of the highest rates of vaccinated adults at 74.7 percent. This puts the Keystone State in the top ten states based on vaccination rates at eighth place.
Read more about the vaccination rates in Fortune.












































