My daughter in law is 7 mos pregnant ans she just found out my son has mercer is it dangerous for her or the baby?

MRSA everywhere. MRSA is not a new plague. Within the first few years after penicillin was produced, we had PRSA & it now only rare staph can be killed with penicillin. MRSA is responsible for 60-70% of the boils I see in the office & I consider it likely part of everyone's daily exposure. Good routine hygiene protects most from it's effects. A pregnant woman & her baby are at no specificincreased risk.