As Australia struggles with its coronavirus vaccine rollout, America vaccinated eight million people in two days

Just before Easter, the United States passed another milestone as it tried to vaccinate the majority of its nearly 330 million people. In just 48 hours, eight million COVID-19 vaccine shots were delivered. As Australia struggles to ramp up our vaccine rollout, the US is delivering enough shots every day that it could vaccinate our entire population in a little over a week. Here's a look at how they got there, and why US President Joe Biden is still warning of a 'life or death race' against the coronavirus.