Top scientists across the world are putting their best foot forward to produce a vaccine for Covid-19 as soon as possible. There are more than 90 vaccines for the virus at different stages of development. At least six of these are already being tested for safety in people. What remains to be seen is which of these vaccines will be ready first and which one will be the most effective. We talk to a senior lecturer in virology at the University of Kent, Dr Jeremy Rossman, and a visiting professor of science at Aston University in Birmingham, Robert Matthews about the search for an effective vaccine. This podcast was hosted by Suhail Akram.