2) “The rate of breakthrough infections with delta is likely somewhat higher than with the original virus; this number is still being debated.”

3) “Delta might be more likely to lead to a serious infection than the original virus; at age 63, I’m already in an moderate risk group for hospitalization and death.”

4) “Though the chances of long COVID with a breakthrough infection seem to be low, there is no rigorous evidence on this and we certainly have seen mild primary infections cause prolonged symptoms.”