‘The problem remains with the unvaccinated,’ expert says

With the spread of the more transmissible Delta variant continuing nationwide, the recent surge in Covid-19 cases is being largely driven by swaths of people that remain unvaccinated, according to one expert.With the spread of the more transmissible Delta variant continuing nationwide, the recent surge in Covid-19 cases is being largely driven by swaths of people that remain unvaccinated, according to one expert.