China looks towards next-gen Covid-19 vaccines amid trial complications

A lack of international cooperation to compare vaccines will make it more difficult for China to come up with convincing data for future vaccines using new technologies or targeting new variants of Covid 19, although China is not alone, experts said.China is developing several second generation vaccines using either inactivated vaccine technology, mRNA or protein subunit technologies. It is also developing first generation vaccines using mRNA technology.China needed to conduct phase 3 clinical…