In Poland, 16-year-olds can now be vaccinated, and in the age group 18 to 24, almost 20 percent have received their first dose, according to European Agency for Safety and Health at Work statistics.

In the oldest age category, the proportion vaccinated is relatively low.

Just under 60 per cent of Poland's over-80s have received a dose or more, which can be compared with Sweden, where the corresponding figure is just over 90 per cent.

"Vaccination saturation"

EU vaccine doses are based on population.

The fact that some EU countries have come a long way in age is about "vaccination saturation" in the older age groups, says Sweden's vaccine coordinator Richard Bergström.

- How fast you move down the age ladder is completely dependent on the willingness to get vaccinated.

Other EU countries where vaccination has come a long way in the youngest age group are Austria and Lithuania.

Even there, almost 20 percent of the country's 18-24 year olds have received at least one dose of vaccine.

One in four hesitant to vaccinate

Just over 25 percent of EU citizens are hesitant to get vaccinated, according to a study by the EU agency Eurofound.

And Poland, Austria and Lithuania in particular are among the countries where vaccination resistance is higher than the EU average.

The Polish government hopes to increase the willingness to vaccinate by attracting lottery winnings of up to SEK 2.5 million.

However, any variations among the EU countries are not something that worries Sweden's vaccine coordinator Richard Bergström.

- It is clear that there will be differences between the EU countries.

But the differences are at a "higher level".

"EU least problem"

The desire to take the covid-19 vaccine has risen since the first measurements were made.

Today, there are enough EU citizens who want to get vaccinated in order to achieve the European Infection Control Agency's target of a vaccination rate of at least 70%.

- The EU is the least problem.

The big problem is countries within the EU's immediate area and other countries we exchange with, says Bergström and exemplifies with the Eastern Balkans, North Africa, Turkey, Ukraine, Japan and Mexico where the vaccination rate is low.

- As long as there is a spread of infection, there are mutations.

Sweden has huge surpluses from the summer onwards and we must get them out into the world.