CDC: Delta Variant Is Now 'Variant Of Concern'

The Delta variant, first identified in India, is more contagious and has spread to over 70 countries, including the US. It is responsible for a surge in cases in England, leading to a delay in reopening plans. Research indicates that two doses of the Pfizer and AstraZeneca vaccines are effective against this variant.

Where was the Delta variant first identified?

• Australia

• United States

• India

• England

How many countries have detected the Delta variant?

• Over 50

• Over 60

• Over 70

• Over 80

Which country delayed reopening plans due to a surge in Delta variant cases?

• India

• United States

• Australia

• England

Which vaccines are shown to be effective against the Delta variant?

• Moderna and Johnson & Johnson

• Pfizer and AstraZeneca

• Sinovac and Sputnik V

• Covaxin and Novavax

How many doses of the Pfizer and AstraZeneca vaccines are needed to be effective against the Delta variant?

• Four doses

• One dose

• Two doses

• Three doses