My 2 Year Old Son Was Tested Due To Chornic

My 2 year old son was tested due to chornic mouth sores and the test showed IGM Antibody level of 3.45 and a HSV IGG of over 8.> They are now testing for Job Syndrome..

We did IVF and tested for everything prior to the IVF could he have gotton the herpes from daycare ?
and what doest the test level mean