The use of the Janssen adenovirus vector vaccine began in Finland in October 2021.
He said outdoor restaurants, bars and possibly spectator sports like soccer could be allowed, with the proper testing in place.
It is similar to the approach used by the and the Russian which use human embryonic kidney 293 cells for adenovirus vector replication.
Vaccine maker Novavax saw similar concerning signs.
The Moderna vaccine is not offered for men under 30 years of age in Finland as a precaution to reduce a very rare risk of myocarditis.
The five-dose vials were then filled, finished with labels and packaged.
On 23 November 2021, the vaccine was approved for use in Canada.
The coronavirus vaccine developed by Oxford University and AstraZeneca uses a similar technology.