Table 1.
Confidence, complacency, and convenience related to COVID-19 vaccines on social media in 2020.
| Topics | New York, US | London, UK | Beijing, China | Mumbai, India | Sao Paulo, Brazil | |||||||||||||
| Total postsa, n | 3028 | 2672 | 4624 | 2166 | 396 | |||||||||||||
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Irrelevant posts | 1460 | 1232 | 1854 | 1126 | 182 | ||||||||||||
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Relevant posts | 1568 | 1440 | 2770 | 1040 | 214 | ||||||||||||
| Topics among relevant postsb, n (%) | ||||||||||||||||||
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Vaccine confidence | |||||||||||||||||
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Perceived importance of vaccines | 115 (7.3) | 130 (9.0) | 712 (25.7) | 140 (13.5) | 22 (10.3) | |||||||||||
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Important | 96 (6.1) | 115 (8.0) | 651 (23.5) | 132 (12.7) | 22 (10.3) | ||||||||||
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Unimportant | 19 (1.2) | 16 (1.1) | 61 (2.2) | 8 (0.8) | 0 (0.0) | ||||||||||
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Perceived effectiveness of vaccines | 217 (13.8) | 361 (25.1) | 928 (33.5) | 294 (28.3) | 71 (33.2) | |||||||||||
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Effective | 142 (9.1) | 305 (21.2) | 674 (24.3) | 261 (25.1) | 68 (31.8) | ||||||||||
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Ineffective | 75 (4.8) | 56 (3.9) | 254 (9.2) | 32 (3.1) | 3 (1.4) | ||||||||||
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Perceived safety of vaccines | 168 (10.7) | 354 (24.6) | 201 (7.3) | 190 (18.3) | 47 (22.0) | |||||||||||
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Safe | 35 (2.2) | 197 (13.7) | 143 (5.2) | 149 (14.3) | 43 (20.1) | ||||||||||
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Unsafe | 133 (8.5) | 157 (10.9) | 58 (2.1) | 41 (3.9) | 4 (1.9) | ||||||||||
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Trust in governments | 294 (18.8) | 177 (12.3) | 148 (5.3) | 72 (6.9) | 8 (3.7) | |||||||||||
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Trust | 14 (0.9) | 19 (1.3) | 138 (5.0) | 16 (1.5) | 1 (0.5) | ||||||||||
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Distrust | 280 (17.9) | 158 (11.0) | 10 (0.4) | 56 (5.4) | 7 (3.3) | ||||||||||
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Trust in experts | 90 (5.7) | 111 (7.7) | —c | 78 (7.5) | 2 (0.9) | |||||||||||
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Trust | 14 (0.9) | 44 (3.1) | — | 24 (2.3) | 2 (0.9) | ||||||||||
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Distrust | 76 (4.8) | 67 (4.7) | — | 54 (5.2) | 0 (0.0) | ||||||||||
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Information around vaccines | |||||||||||||||||
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Misinformation or rumors | 185 (11.8) | 158 (11.0) | 188 (6.8) | 30 (2.9) | 12 (5.6) | |||||||||||
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Complacency | |||||||||||||||||
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Perceived risk of getting COVID-19 | 89 (5.7) | 52 (3.6) | 742 (26.8) | 45 (4.3) | 4 (1.9) | |||||||||||
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High | 80 (5.1) | 45 (3.1) | 688 (24.8) | 41 (3.9) | 4 (1.9) | ||||||||||
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Low | 9 (0.6) | 7 (0.5) | 54 (1.9) | 4 (0.4) | 0 (0.0) | ||||||||||
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Vaccine convenience | |||||||||||||||||
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Vaccine accessibility | 94 (6.0) | 76 (5.3) | 283 (10.2) | 99 (9.5) | 49 (22.9) | |||||||||||
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Vaccine distribution | 309 (19.7) | 261 (18.1) | 325 (11.7) | 63 (6.1) | 26 (12.1) | |||||||||||
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Vaccine affordability | 107 (6.8) | 40 (2.8) | 197 (7.1) | 33 (3.2) | 20 (9.3) | |||||||||||
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Vaccine types | 259 (16.5) | 470 (32.6) | 941 (34.0) | 270 (26.0) | 122 (57.0) | ||||||||||||
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AstraZeneca | 102 (6.5) | 388 (26.9) | 82 (3.0) | 218 (21.0) | 63 (29.4) | |||||||||||
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Moderna | 51 (3.3) | 30 (2.1) | 37 (1.3) | 31 (3.0) | 21 (9.8) | |||||||||||
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Pfizer | 88 (5.6) | 26 (1.8) | 34 (1.2) | 18 (1.7) | 27 (12.6) | |||||||||||
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Chinese vaccines | 25 (1.6) | 26 (1.8) | 831 (30.0) | 19 (1.8) | 13 (6.1) | |||||||||||
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Others | 83 (5.3) | 51 (3.5) | 990 (35.7) | 34 (3.3) | 5 (2.3) | ||||||||||||
aWe assessed 50% random samples from New York and London due to the large sample size, and full samples in Beijing, Mumbai, and Sao Paulo.
bTopics are calculated among relevant posts.
cTrust in experts is not measured specifically for Sina Weibo posts from Beijing.