Delivering a vaccine against Group A Streptococcus could save thousands Group A Streptococcus (GAS) causes a number of infections, most commonly “strep throat” but it can also cause rheumatic fever and rheumatic heart disease and is responsible for over 500,000 deaths a year. Drug delivery scientists, however, have been working on a vaccine. We asked Mariusz Skwarczynski, postdoctoral research fellow, University of Queensland, Australia, about his work in this area. In this interview, Dr Skwarcz