A third of Americans yet to receive a COVID-19 vaccine say they would be more likely to get the shot if offered $100, a study has found.

But not everyone was swayed by money: 15% of those surveyed by the University of California, Los Angeles (UCLA) COVID-19 Health and Politics Project said they would be less likely to get the shot if offered $100.  .

However, not everyone is convinced by a cash reward: 19% of those surveyed said they would be less likely to get the shot if offered a $100 payment.

The UCLA study examined the likelihood of people to get vaccinated when offered $100, $50 and $25.

At $100, 34% said they would be more likely to take a shot, at $50, 31% said they would be more likely, and when the amount was $25, 28% said they would be more inclined.

But some among the 7249 people randomly surveyed said they would be less inclined to be vaccinated if offered a cash payment. .

When offered $100, 15% said they would be less likely to take a shot, 17% said they'd be less inclined if they were offered $50, and 15% said they would be dissuaded from taking the vaccine if they were offered $25.

The effect was greatest for unvaccinated Democrats, 48 percent of whom said they would be more likely to get vaccinated if it came with a $100 payment.

A third of yet-to-be vaccinated Americans would be more likely to get the shot when offered $100, a UCLA study has found.

Maryland is offering $100 to state employees who receive the vaccine, and West Virginia announced last week that it would give $100 savings bonds to anyone aged between 16 and 36 who gets the shot. .

The number of people taking the vaccine peaked on April 10 when 4.63 million Americans received the shot in a 24-hour period. 

Women were slightly more likely to have their heels dug in than men, with 81 percent of women not getting the vaccine saying nothing could change their mind against 77 percent of men. 

Now, north of 80 percent of Americans would likely need to be vaccinated against the virus to prevent resurgences

That simply may not be possible, considering that between 20 and 30 percent of Americans are still vaccine hesitant. 

Wyoming has the highest rate of vaccine hesitancy in the country, with an estimated 32 percent of people saying they won't get the shots in at least 11 of the state's 23 counties

Mississippi lags furthest behind, with 31.1 percent of residents having had one or more doses and just 23.8 percent fully vaccinated