When looking at va((ine efficiency, truth economics is again at play. We see that the efficiency is allegedly 95% effective at you not acquiring the “illness” (but there is a 2-5% adverse reaction to the va((ine and a 99.7% survival).
What are your chances of getting and transmitting the illness? We don’t know, it simply reduces your chance of acquiring it or having a bad reaction.
What are your chances of surviving the illness? It depends on your immune system. It also depends on certain substances known to effectively treat the illness, namely hydroxychloroquine (which you can make at home and with the addition of zinc), and Ivermectin, a medicine that is available either on prescription or through certain animal medications.
The Lancet has a good write up: https://www.thelancet.com/journals/lanmic/article/PIIS2666-5247(21)00069-0/fulltext