Is Pfizer's COVID-19 vaccine our pandemic game changer?

One big question is how we will transport and store a vaccine that needs to be kept at -70C

Interim analysis of data on a messenger RNA-based COVID-19 vaccine showing more than 90% efficacy in preventing infections is being hailed as promising by leading doctors.

Prime Minister Scott Morrison.

Called BNT162b2, the vaccine apparently exceeds the 50% efficacy threshold set by the US Food and Drug Administration (FDA) in June, according to its makers, Pfizer and BioNTech.

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