U.S. Pledges $1.2 Billion For Experimental Vaccine Doses

The US has committed $1.2 billion to AstraZeneca for 300 million vaccine doses, with clinical trials starting in April. The doses will be stored until proven effective. AstraZeneca is confident in the vaccine's potential, expecting all doses by December or January. Operation Warp Speed aims for a widely available vaccine by 2021, with phase three trials involving 300,000 US volunteers.

How much money has the US pledged to AstraZeneca for vaccine doses?

• $1.2 billion

• $2 billion

• $500 million

• $3 billion

When did clinical testing of the AstraZeneca vaccine begin?

• March

• April

• May

• June

By when does AstraZeneca expect all 300 million doses to be delivered?

• February

• December or January

• November

• October

What is the name of the US initiative aiming for a widely available vaccine by 2021?

• Operation Warp Speed

• Operation Fast Track

• Vaccine Speed

• Rapid Vaccine Initiative

How many volunteers are expected to participate in phase three trials in the US?

• 400,000

• 300,000

• 200,000

• 100,000