Table 3. Reasons for not getting the COVID-19 vaccine in May, 2021, by vaccine intent level among US adults (N = 87,984)^a.

	Likelihood of accepting the COVID-19 vaccine if offered it today
	Hesitant (Definitely/ probably not)	Definitely not	Probably not	Probably yes
	N = 73362	N = 46576	N = 26786	N = 14622
	% (95% CI)
Concerned about possible side effects	49.2 (48.7, 49.7)	49.1 (48.5, 49.7)	49.4 (48.6, 50.1)	49.4 (48.4, 50.4)
Don’t trust COVID-19 vaccines	48.4 (48.0, 48.9)	59.2 (58.6, 59.8)	29.3 (28.6, 30.0)	13.0 (12.3, 13.8)
Don’t trust the government	41.5 (41.1, 42.0)	51.2 (50.6, 51.7)	24.4 (23.7, 25.1)	14.0 (13.2, 14.8)
Don’t believe I need it	38.1 (37.7, 38.6)	46.7 (46.1, 47.3)	22.9 (22.2, 23.5)	7.5 (6.9, 8.1)
Plan to wait and to see if safe	34.4 (33.9, 34.8)	24.3 (23.8, 24.8)	52.3 (51.5, 53.1)	46.9 (45.9, 48.0)
Concerned about an allergic reaction	23.9 (23.5, 24.3)	23.0 (22.5, 23.5)	25.6 (25.0, 26.3)	28.5 (27.5, 29.4)
Don’t know if it will work	21.9 (21.5, 22.2)	23.3 (22.8, 23.8)	19.3 (18.7, 19.9)	17.0 (16.2, 17.8)
Don’t like vaccines	14.7 (14.4, 15.1)	17.6 (17.1, 18.0)	9.6 (9.2, 10.1)	7.6 (7.0, 8.2)
Other people need it more	12.6 (12.3, 13.0)	9.1 (8.7, 9.5)	18.9 (18.3, 19.6)	25.1 (24.1, 26.0)
Safety concern because of my health condition	12.2 (11.9, 12.4)	11.6 (11.2, 11.9)	13.2 (12.7, 13.6)	13.4 (12.7, 14.0)
Doctor has not recommended	9.3 (9.0, 9.6)	10.1 (9.7, 10.4)	8.0 (7.6, 8.4)	6.8 (6.3, 7.3)
Against religious beliefs	8.2 (7.9, 8.5)	11.2 (10.8, 11.6)	2.9 (2.7, 3.2)	1.2 (0.9, 1.4)
Currently/planning to be pregnant/breastfeeding	6.7 (6.4, 6.9)	6.5 (6.2, 6.8)	6.9 (6.5, 7.3)	4.8 (4.4, 5.2)
Concerned about cost	3.2 (3.0, 3.4)	3.2 (2.9, 3.5)	3.3 (3.0, 3.6)	7.9 (7.3, 8.6)
Other	16.2 (15.8, 16.5)	18.6 (18.2, 19.1)	11.9 (11.4, 12.3)	11.7 (11.1, 12.4)

^a Excludes adults who already were vaccinated or reported “definitely yes” to intent question.