By Lisa Yu and Devarshi Kapadia
Vaccines have been developed at record breaking speeds to fight the COVID-19 pandemic and are already saving lives1. At the time of writing, over 2.55 billion COVID-19 vaccine2 doses have been administered globally and are paving the way to a return to a "new normal." However, there is still a pressing need to develop more vaccine options to further increase global access, and prepare for future infectious disease challenges. To aid in the manufacturing of new vaccines, Pichia pastoris yeast, a promising protein expression system, could be the perfect solution.