Argentina
Brazil
Germany
Japan
South
Korea
Spain
UK
US
0%
50%
100%
The efficacy of COVID-19 vaccines
82%
65%
57%
59%
48%
60%
49%
70%
How COVID-19 vaccines work
78%
65%
55%
58%
48%
56%
46%
73%
The safety of COVID-19 vaccines
82%
66%
56%
59%
47%
46%
42%
70%
How the population will be vaccinated against COVID-19
85%
65%
56%
42%
43%
61%
38%
67%
How many people have been vaccinated against COVID-19
82%
63%
57%
47%
39%
53%
34%
62%
The development of new COVID-19 vaccines
68%
58%
43%
46%
40%
55%
36%
71%
How COVID-19 vaccines are regulated
69%
57%
42%
38%
31%
49%
31%
64%
Q18. How confident, if at all, are you in your knowledge about each of the following? Base: Total sample in each country.