Here are how the poll results, released Tuesday, break down:
37% of unvaccinated Americans say the vaccines represent a greater health risk than the virus.
29% say the virus poses a greater risk to their health than the vaccines.
34% say they’re not sure.
51% of unvaccinated U.S. adults say they will "never" get vaccinated.
20% say they will wait "to see what happens to others before deciding."
22% were not sure what they would do.
37% of unvaccinated Americans say they are "concerned about long-term side effects."
17% don’t trust the government.
16% say the vaccines are too new.
11% say the Food and Drug Administration "hasn’t fully approved the vaccines yet."
6% of unvaccinated Americans say they don’t trust any vaccines.
39% say they are not worried about the Delta variant.
34% say they are worried about the Delta variant.
85% of vaccinated Americans say the Delta variant poses a serious risk.
The poll, conducted July 13-15, surveyed 1,715 people. The margin of error is 2.7 percentage points.
The survey came as Dr. Vivek Murthy, the U.S. Surgeon General, said COVID-19 "misinformation is an urgent threat to public health."
Murthy, in his first surgeon general’s report, had said on Thursday that "health misinformation" keeps putting "lives at risk" and lengthens the pandemic, according to NPR.
He called for a fight against "health misinformation."
"COVID has really brought into sharp focus the full extent of damage that health misinformation is doing," Murthy told NPR.
Surgeon general's advisories are reserved for significant public health challenges that demand immediate attention.
He pressed those who are unsure of the validity of claims about COVID not to share questionable statements.
"If you're not sure, not sharing is often the prudent thing to do.
Over the last 18 months, COVID-19 has killed more than 4.1 million people worldwide, including more than 600,000 in the U.S. At the same time, more than 2 billion people worldwide — and more than 186 million Americans — have been at least partially vaccinated against the virus, and scientists who study data on their reported side effects last to find that the vaccines are extraordinarily safe.
With Delta rapidly growing aggressively nationwide, U.S. COVID-19 cases have risen by 140 percent over the last two weeks. Hospitalizations and deaths — both lagging indicators — are up by one-third over the same period.