I'm opposed to delaying doses in the absence of data, but it should be noted this theory of escape mutants has become controversial. In the area of antibiotic t

I'm opposed to delaying doses in the absence of data, but it should be noted this theory of escape mutants has become controversial. In the area of antibiotic treatment it's a fairly standard idea but has been increasingly questioned, and it's not clear it applies to vaccines as readily anyway (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5378080/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5378080/).