China to study using CanSinoBIO Covid shots as a booster

Chinese researchers plan to study using a Covid-19 vaccine from CanSino Biologics as a booster shot for people who have already been inoculated with other vaccines, clinical trial registration data showed.

China has not yet approved mixing doses of different vaccines using different technologies, but the director of the Chinese Center for Disease Control and Prevention said in April the country was considering it as a way of boosting vaccine efficacy.

Five out of the seven vaccines...