There's not really such a thing as 'boosting' your immune system - it's either working properly, or it's not. A 'boosted' / over-active immune system results in auto-immune diseases like Crohn's (which is what I have). Funnily enough I'm being treated with Stelara which actually suppresses my immune system - so it's no 'live' vaccines for me and other vaccines might not work effectively or at all, and I need to be extra careful to avoid getting ill. Working 100% remote is something I am appreciating more and more currently.