> Unhealthy does not equal dangerous.
Webster is your friend: unhealthy=harmful to health. dangerous=likely to cause harm.
If you are trying to distinguish between harm to yourself and others, it is probab ly not correct and also this may be a libertarian thing, but not a halakhic one.
BTW, we already saw Kiddush Hashem by Israeli government when they were first to vaccinate – not only buying the vaccine but doing it faster than others. Now, with many US states already rescinding indoors mask mandates due to population pressures, Israel will do it in 2 weeks from now. To appreciate how Israel valued human lives with this decision – Their case rate is 20x lower than US and was at that low level for 3 weeks already. Not sure whether this is due to the fact that a large subset of population is resilient with all other threats around, or just the politicians did not buck to pressure.