Some state-run vaccine lotteries did not help increase COVID-19 immunization rates, a new study suggests.
Over the spring and summer, at least 19 states — including California, New York, Ohio and West Virginia — tried to incentivize unvaccinated individuals to get shots, offering cash prizes, free tickets, guns, college scholarships and trucks.
However, research from the Boston University School of Medicine found some of these prizes had little to no effect on convincing residents to get vaccinated against COVID.
For the study, published in JAMA Internal Medicine, the team compared vaccination rates between 15 states that offered lotteries with cash prizes and 31 states that did not between May 24, 2021 and July 19, 2021.
The study found that about four weeks before the lottery announcement, the lottery states were vaccinating an average of 225 per 100,000 people with their first doses.
Immediately after the lottery announcement, the rate increased by 1.1 per 100,000 people.
However, by the fourth week following the lottery, the rate had fallen to fewer than 100 per 100,000 people receiving their first shots.