​In a Danish-Norwegian collaboration, researchers have shown a slightly increased rate of rare but serious types of cerebral blood clots as well as a generally increased rate of venous blood clots following vaccination with the AstraZeneca vaccine. The risk of such adverse events is considered very low for the individual vaccine recipient.

​A major Danish study has showed that the incidence of cervical cancer is up to 86% lower for women who received HPV vaccine before the age of 20. The researchers behind the study believe that it may be possible to almost eradicate cervical cancer in Denmark.