I'm genuinely curious what's the difference between public and nationalized health service? Nationalized for me means that something is owned by state (and for

I'm genuinely curious what's the difference between public and nationalized health service? Nationalized for me means that something is owned by state (and for me it is the same as public). (You are right I forgot about second dozes, but I think that's a good thing considering manufacturers are not supplying us on schedule - and some stupid countries - like mine - use up all vaccines and hope that there will be a second doze in 6 weeks).