The Danish government has decided not to use the Covid-19 vaccine made by US firm Johnson & Johnson, multiple media reports said on Monday.
Reports cited a meeting convened by Danish Health Minister Magnus Heunicke.
The reason for the decision is fears that the jab, also known as Janssen, could lead to blood clots in rare cases.
For the same reason, Denmark had previously withdrawn the AstraZeneca vaccine from its programme.
Since only one dose of the Johnson & Johnson jab is needed, Denmark had ordered a particularly large quantity, according to the news agency Ritzau.
The director of the Danish health authority, Soren Brostrom, has pointed out that not using Johnson & Johnson could lead to healthy, young people between 20 and 40 having to wait a longer for their vaccination.
Authorities in the United States last month lifted a pause regarding the use of Johnson & Johnson's vaccine following a "thorough safety review" triggered by the reports of serious blot clots.
Finnish authorities said last week that they are awaiting a new review by the European Medicines Agency (EMA) to decide whether or not to incorporate it into the Finnish vaccination schedule.