Stanley’s illness was disclosed earlier this week and Simmons’ was disclosed on Wednesday.
Simmons is said to be experiencing “mild symptoms,” according to a statement from the band.
The tour is expected to resume on September 9 in Irvine, California. The band and crew will be isolating for the next 10 days out of precaution, the statement added.
The postponed dates include shows that were set to take place in Michigan, Ohio, Illinois and Wisconsin.
The band previously postponed a show in Burgettstown, Pennsylvania after news of Stanley’s positive test was disclosed.