https://www.sciencedaily.com/releases/2022/10/221025150226.htm

Incentives aimed at individuals to encourage them to get vaccinated have included direct cash transfers, lottery tickets, and non-financial incentives, such as food, appliances, and cannabis. In New York City, residents were offered a range of items -- from a $100 pre-paid debit card, to free amusement park tickets, to a trip to the Statue of Liberty.

"While we found evidence of cash transfers increasing both the coverage and intention to be vaccinated, very few studies considered these effects at a population level, and the ones that did found that the improvements were limited to a few percentage points in vaccination coverage," said Nina Schwalbe, MPH, an adjunct assistant professor in the Heilbrunn Department of Population and Family Health at Columbia Mailman School of Public Health.