I am in Australia and our government is almost all in on this vaccine. They bought a bit of the BioNTech/Pfizer for our front line people to get started but they bought the rights to make 50 million doses (enough for two for everyone here) of the AstraZeneca domestically in our own facilities rather than have to import it. So I've been watching this with intense interest - because likely this one will be the only option I am offered here while, based on the efficacy data, it looks like I want almost any other one more. But I suppose it is better than nothing? Also does anyone know if I take this one when it is offered can I also double up and take another (better?) one later?