The gap between doses has been reduced from the previous minimum of four weeks, the Danish Health Authority (Sundhedsstyrelsen) confirmed in a statement on Friday.
That means a shortened waiting time for those receiving the Pfizer jab to become fully vaccinated.
“This means that you can become fully vaccinated earlier than was previously the case,” the health authority said in the statement.
A change to the booking system for Covid-19 vaccination, making it more flexible, has allowed for the reduction in waiting time.
People who already have an appointment for their second dose are now able to change it to an earlier date via the vacciner.dk platform.
Regional health authorities can also be contacted by telephone to request an earlier appointment.
Although the interval for the Pfizer vaccine has been shortened, those receiving the Moderna vaccine still have to wait a minimum of four weeks before receiving their second dose. The two companies’ vaccines are the only ones in use in Denmark’s national Covid-19 vaccination programme.