It’s pretty simple really. My chance of a) catching and b)...

It’s pretty simple really. My chance of a) catching and b) suffering severe consequences from covid are extremely low in Australia (right now)

my chance of having a vaccine is binary, and conditional on that choice I may subject myself to an adverse reaction.

an adverse reaction of which I am not sure of the short, medium or long term effects.

scales tip for me when a) above becomes a threat I can’t ignore

in the mean time I will observe the short, medium and maybe long term impacts of the vaccine