Source: China – South China Morning PostChina has spent more than a year developing Pfizer-type Covid-19 vaccines that may help it pivot from stringent “zero-Covid” restrictions, but a changed market and the Omicron variant have muddied their prospects before efficacy data has even been published.Still, China is unlikely to join most countries in approving foreign-made vaccines based on messenger RNA (mRNA) technology before making its own, experts said, although a slowing vaccination drive at home and in some other nations and…Read More