This is borne out by recent data from New York City that show that more than 96 percent of cases are among the unvaccinated. Only 0.33 percent of fully vaccinated New Yorkers have been diagnosed with COVID-19.
To highlight what this means in the real world, imagine two weddings with 100 guests, one where everyone is unvaccinated and another where all the guests are vaccinated.
In the unvaccinated wedding group, the likelihood that at least one of the guests has COVID-19 is high. Similarly, everyone present is more susceptible, and the virus will likely infect many others, given the increased transmissibility of the Delta variant.
At the wedding with exclusively vaccinated attendees, however, the likelihood that anyone present has COVID-19 is minuscule. Even if someone present is infected, the likelihood that the other guests will contract the virus is similarly low, given the protection afforded by their shots.