The case for the Oxford vaccine.

The Moderna & Pfizer vaccines against Coronavirus are apparently effective in 95% of cases. But they need to be stored & distributed at -70ºC, requiring the use of dry ice. Which means a fair bit of CO2 gas given off as the dry ice warms up. This restricts the number of vaccine doses that can safely be carried as air freight.
Conversely, the Oxford vaccine which (with a bit of work) will match the 95% effectiveness of the other two is stable at normal household refrigerator temperatures. Australia’s Commonwealth serum Laboratory has secured the rights to make & distribute the Oxford variant in the Oceania region.
On a more personal side, the Moderna & Pfizer vaccines are not suitable for folk like m e who are immunocompromised. The Oxford one is suitable for me.