What next for Chinese Covid-19 vaccines after WHO approves first two products?

More Chinese vaccine makers are lining up for World Health Organization approval after the global health body authorised the emergency use of two of the country’s products.Three pharmaceutical firms have formally registered their interest with the WHO, while two others are in preliminary discussions.One of the three firms, CanSino, started submitting rolling data about its one-shot vaccine to the global health body this month, according to the WHO.Its vaccine has already been approved for use…