China approves trials on using mRNA vaccine as booster shot

China has approved trials for the use of a domestically developed mRNA Covid-19 vaccine as a booster shot — a development that could widen the options for China’s vaccination campaign.

The Ministry of Science and Technology said it had approved clinical trials on the efficacy and safety of using the vaccine, which uses advanced genetic techniques to trigger an immune response, on adults who have already been given vaccines made using inactivated material from the coronavirus.