[The current status and issues for vaccine development]

ABSTRACT

Summary Vaccine development is important for the control of COVID-19, as well as for the development of diagnostic and therapeutic agents, and vaccine development is underway in many countries. Vaccine development is underway in many countries. Although there is no vaccine with established efficacy, phase III trials have begun in the United Kingdom, the United States, China, Russia, and Germany. The development of inactivated vaccines such as DNA vaccines, RNA vaccines, and vector vaccines is underway. There have been reports that BCG vaccine is expected to be effective, but the efficacy has not yet been established. Rapid vaccine development is required, and attention should be paid to issues such as adverse events and duration of efficacy.