The European Medicines Agency is studying the T cell immune response generated by the currently approved Covid-19 vaccines to find out whether anything can be learned for the future. In a briefing with journalists on 3 March, Marco Cavaleri, head of biological health threats and vaccines strategy, said the review covers all platforms represented by the currently approved vaccines. One of the objectives is to find out if the T cell component of immunity can offer protection against new variants of the virus.
