That’s surprisingly low considering the effort going into the global race for a vaccine against the coronavirus that has sparked a pandemic since first emerging from China late last year. But more people might eventually roll up their sleeves: The poll, released Wednesday, found 31% simply weren’t sure if they’d get vaccinated. Another 1 in 5 said they’d refuse.

Health experts already worry about the whiplash if vaccine promises like President Donald Trump’s goal of a 300 million-dose stockpile by January fail. Only time and science will tell — and the new poll shows the public is indeed skeptical…

Among Americans who say they wouldn’t get vaccinated, 7 in 10 worry about safety.

“I am not an anti-vaxxer,” said Melanie Dries, 56, of Colorado Springs, Colorado. But, “to get a COVID-19 vaccine within a year or two … causes me to fear that it won’t be widely tested as to side effects.”