As the highly contagious delta variant spreads across the United States, a surprising number of vaccinated Americans are testing positive for COVID-19. The promise of a “return to normal” has hit an unexpected roadblock with the growing risk of these breakthrough infections. According to an early new study, individuals infected with the delta variant may carry more than a thousand times more virus particles, testing positive up to two days earlier than those infected with the original SARS-CoV-2.

read more