Press release  

Wide variation in the risk of side effects after COVID-19 vaccination  

Some people who received Pfizer/BioNTech’s COVID-19 vaccine had a significantly higher risk of reported side effects than others.  

This is the main finding of a research collaboration that has analysed data from Sweden and 

Denmark, published in the journal Medicina (https://www.mdpi.com/1648-9144/60/8/1343) 

Using official records, the researchers identified the same worrying trends in Swedish data that they had found in a previous study of Danish data.  

COVID-19 vaccine administered during the first months of the vaccination roll out resulted in significantly more side effects. It was mainly the elderly, care workers and other healthcare professionals who received these early batches. 

Seeking to confirm their earlier findings (Schmeling et al., 2023) [...]