On Wednesday, US President Joe Biden announced "a month of action" and presented a series of initiatives to get more citizens vaccinated.
The Biden administration's goal is for 70 percent of the population to be vaccinated on National Day on the fourth of June.
Today, about 63 percent of the inhabitants are vaccinated.
About a hundred private companies have joined the US government's initiative and offer, among other things, baseball tickets and monks.
The majority of the initiatives are about companies that provide time or extra pay to employees who get vaccinated.
One company that is not on the authorities' list is a business in Michigan that offers pre-rolled marijuana cigarettes.
Lottery of weapons
There are also attempts at the state level to attract more people to the vaccine clinics.
Ohio, New Mexico and California are among the states where residents can win money in vaccine lotteries.
The state of West Virginia's initiative to raffle off weapons, scholarships and trucks has been met with criticism from some residents.
One cow a week
Vaccine bookings in Thai Mae Chaem are said to have risen sharply since district authorities announced they would raffle off a cow a week, year-round.
In the capital of Israel, residents of the capital were able to get free pizza and hummus when they were vaccinated in February.
And in Poland, a lottery will be launched in June where citizens can win up to SEK 2.5 million.
"Sufficient motivation in Sweden"
In Sweden, there are already enough people who want to get vaccinated according to the national vaccine coordinator Richard Bergström.
- I do not think it works with financial carrots to get vaccinated in Sweden.
Nine out of ten Swedes want to be vaccinated according to a survey conducted by Novus on behalf of Swedish Radio.
- We have sufficient motivation.
I think we may end up at the very top of the vaccination league, says Richard Bergström.