My understanding is that in some studies, it's as high as a 10% chance. Is that what you've seen? Also, for which age groups? I know that those who have been vaccinated and are elderly, that risk percentage increases. Or are you seeing those numbers higher, and across all age groups and health conditions? The latest I've seen is the delta variant is going to mow down the anti-vaccers much easier than those who have been vaccinated. If they lucked out the first round, the second may change their tune.
And yes, if they offer boosters, I plan to get one as well. For sure.
How well COVID-19 vaccines work against the Delta variant, according to the best available data says 86%/87% Pfizer after two doses but the Israel study says 64% effective. The article does mention how hard it is to come up with percentages in the real world because of all the variables involved.
But personally when I see 64% and 86%, it's enough for me to become more cautious.