News COVID-19 transmission among the fully vaccinated is rare, but possible, experts say. Here’s why. August 11, 2021 Adrianna Rodriguez, USA TODAY Comments Off on COVID-19 transmission among the fully vaccinated is rare, but possible, experts say. Here’s why. A fully vaccinated person who gets COVID-19 won't be contagious for long, experts say, and may not have the chance to transmit the virus to others.