https://apnews.com/31ddcca6119e018bd826d2a05df7f68b > New U.S. studies released Friday show the COVID-19 vaccines remain highly effective against hospitalizations and death even as the extra-contagious delta variant swept the country. > One study tracked over 600,000 COVID-19 cases in 13 states from April through mid-July. As delta surged in early summer, those who were unvaccinated were 4.5 times more likely than the fully vaccinated to get infected, over 10 times more likely to be hospitalized and 11 times more likely to die, according to the Centers for Disease Control and Prevention.