Johnson & Johnson’s Janssen COVID-19 vaccine is the latest vaccine to come under scrutiny after Belgium pulled the plug on rolling it out for people under the age of 41 following the death of a woman from severe side-effects. “The Inter-ministerial conference has decided to temporarily administer Janssen’s vaccine to the general population from the age of 41 years, pending a more detailed benefit-risk analysis by the EMA,” the Belgian health ministers said in a statement. The EMA is the European Union’s European Medicine’s Agency.