In germany, that's an open question as far as I know. The government is a whole different can of worms, so let's stick to private companies. Companies are boun

In germany, that's an open question as far as I know. The government is a whole different can of worms, so let's stick to private companies. Companies are bound to the general law of equal treatment (AGG). This law effectively states you cannot treat a person less favorable based on a couple of protected groups - sexual identity, religion, disability, age. An initial evaluation of our parliament speculates you might be able to claim a condition rendering you unable to be vaccinated as a disability, which would render it protected under the AGG. However, it also states that in the current times, there might be a tradeoff between the fundamental rights of individuals. The right to not be harmed of every other individual on such an event might outweigh an individuals right to be treated equally. Hence, as long as this is not challenged, a german company could very much deny unvaccinated individuals entry and business, because this decision is not clear. However, it is very much within the right of everyone to sue the company and then courts will decide this tradeoff - at least as long as there is a proven medical condition.