They are still not fully licensed anywhere, afaik. FDA has given emergency use authorisation. EU has given conditional marketing approval. This is why alternatives, or repurposed drugs, are not being considered. Emergency or conditional approvals are contingent on no other FDA approved therapeutic being available.

I intend to decline ‘vaccination’ (mRNA injection) until fully licensed with medium-term safety data available (i.e. a few years worth). Aka never.