As promised, I have taken a very good look at the different essential oils and have come up with a bend that I am sure sure can boost your immunity.  However, remember that essential oils are not the only thing that can help.  Make sure to eat right, be active, get the right amount of sleep, and consult with your herbalist.  All of these things things together will help your immune system.
 
Key therapeutic properties: #immunostimulant #antibacterial #antiviral #antibacterial
 
This blend includes:
Ravintsara (Cinnamomun camphor ct.1,8 cineol), Sweet Marjoram (Oiganum majorana), Sweet Orange (Citrus sinensis), Thymus vulgarism ct. linalol, and Ho Wood (Cinnamomum camphora)
 
I believe the synergy of these essential oils are amazing.  I use many of these in my daily health as much as possible.