You might want to reconsider your position on booster vaccination after infection. From the CDC website, "Substantial immunologic evidence and a growing body of epidemiologic evidence indicate that vaccination after infection significantly enhances protection and further reduces risk of reinfection, which lays the foundation for CDC recommendations."
There is not enough solid data as of yet. I am not sold on that one, sorry. Anyway, we are not in a vaccine discussion here but rather to help fellow travellers to go thru the entrance procedure. Cheers!