From adenoviruses to RNA: the pros and cons of different COVID vaccine technologies

The World Health Organisation lists about 180 COVID-19 vaccines being developed around the world. Each vaccine aims to use a slightly different approach to prepare your immune system to recognise and fight SARS-CoV-2, the virus that causes COVID-19. However, we can group these technologies into five main types. Some technology is tried and trusted. Some technology has never before been used in a commercial vaccine for humans. As we outline in our recent paper, each technology has its pros and cons.