From: Predictors of COVID-19 vaccine uptake: an online three-wave survey study of US adults
 | December 2020 (N = 69) | January 2021 (N = 69) | March 2021 (N = 69) | |
---|---|---|---|---|
Safety – no. (%) |  |  |  | |
 | Concerns about side effects | 24 (35) | 14 (20) | 20 (29) |
 | Concerns about vaccine development process | 5 (7) | 16 (23) | 12 (17) |
 | Worried about getting COVID-19 from the vaccines | 3 (4) | 2 (3) | 2 (3) |
 | I don’t like needles | 4 (6) | 1 (1) | 2 (3) |
Efficacy – no. (%) |  |  |  | |
 | Doubt vaccine efficacy | 4 (6) | 7 (10) | 4 (6) |
Low COVID-19 threat – no. (%) |  |  |  | |
 | I won’t get COVID-19 even if I don’t get the vaccine | 4 (6) | 5 (7) | 5 (7) |
 | COVID-19 is not as serious as some people say | 5 (7) | 3 (4) | 6 (9) |
 | I do not think I’ll get very sick if I get COVID-19 | 2 (3) | 3 (4) | 1 (1) |
Personal beliefs – no. (%) |  |  |  | |
 | Against religious/philosophical beliefs | 6 (9) | 3 (4) | 4 (6) |
 | Distrust of big Pharma/government | 5 (7) | 5 (7) | 5 (7) |
Other reasons – no. (%) |  |  |  | |
 | Already had COVID-19 | 1 (1) | 3 (4) | 2 (3) |
 | No specific reason/multiple reasons/Unsure | - | - | 3 (4) |
 | Did not respond | 5 (7) | 5 (7) | - |
 | I plan to get the vaccine | - | 1 (1) | 1 (1) |
 | Access/Availability/Cost | - | 1 (1) | - |
 | Medical reasons (e.g., allergies) | 1 (1) | - | 2 (3) |