Research progress on COVID-19 vaccine

Coronavirus disease 2019 (COVID-19) is a new infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The most effective way to prevent the COVID-19 pandemic sweeping the world is to develop safe and effective vaccines. Many institutions have carried out research on different types of vaccines such as nucleic acid vaccine, viral vector vaccine, inactivated vaccine, recombinant protein vaccine, and attenuated influenza virus vector vaccine, and have made inspiring progress We reviewed the research progress for different types of COVID-19 vaccine, and analyzed existing problems with their development.