It's officially recommended in Denmark: "Based on a precautionary principle, we recommend aspiration before injection." https://en.ssi.dk/news/epi-news/2021/no

It's officially recommended in Denmark: "Based on a precautionary principle, we recommend aspiration before injection." https://en.ssi.dk/news/epi-news/2021/no-19-21---2021 https://en.ssi.dk/news/epi-news/2021/no-19-21---2021