The vast majority of the 1,000 coronavirus vaccine doses reserved for the county's mass vaccination clinic on Thursday are still available.
All people ages 18 and older are eligible for the vaccines, which are being given for free from 11 a.m. to 6 p.m. on the west side of Westgate Mall.
Those who wish to register for the clinic can fill out a form online by clicking here or call (712) 794-5835.
The vaccine is made by Moderna and requires two doses. A follow-up clinic for the second dose is scheduled for May 14.
About 100 people had registered for the clinic as of this morning, said Nikki Schwering, the county's public health director.
This is the county's second mass vaccination clinic. Nearly 1,200 people were inoculated in the first clinic on April 1.
According to state data, more than 8,600 of the county's residents have had at least one vaccine shot, which is about 43 percent of Carroll County's total population.
The aim of a worldwide vaccination push is to stop the spread of the coronavirus through herd immunity, which happens when enough people have been vaccinated or have recovered from infection and are less likely to transmit the virus.
It's yet unclear how many people will need to acquire immunity to reach herd immunity against the coronavirus, but polio needed about 80 percent and measles needed 95 percent, according to the World Health Organization.