From what I read [1], the Chinese "trail" (no data, only vague description) on chloroquine phosphate was mainly focused on mild - severe cases, not critical cas

From what I read [1], the Chinese "trail" (no data, only vague description) on chloroquine phosphate was mainly focused on mild - severe cases, not critical cases. These cases were not very likely going to die even without the drug. So fatality rate would not be a good metric to follow on. Metrics used in the "trail" also does not contains fatality rate, there were only something like "lung improvement rate in X days". Another interesting point is China explicitly banned usage of macrolide antibiotics (which includes Azithromycin) together with chloroquine [2]. It was posted on Feb 26, 2020. I tried to use Wayback Machine to check whether they rewrote the history, but it seems like Wayback Machine only saved it recently. Another source (and with English translation) [3] indicate it is at least earlier than Mar 1 though. I did a Google search on key sentence "禁止同时使用喹诺酮类、大环内酯类抗生素及其他可能导致QT间期延长的药物" and found widespread reposting around March 1, so the date is likely genuine. [1] http://www.scio.gov.cn/xwfbh/xwbfbh/wqfbh/42311/42568/xgbd42575/Document/1673607/1673607.htm http://www.scio.gov.cn/xwfbh/xwbfbh/wqfbh/42311/42568/xgbd42... [2] http://www.nhc.gov.cn/yzygj/s7653p/202002/0293d017621941f6b2a4890035243730.shtml http://www.nhc.gov.cn/yzygj/s7653p/202002/0293d017621941f6b2... [3] https://www.chinalawtranslate.com/en/chloroquine-phosphate/ https://www.chinalawtranslate.com/en/chloroquine-phosphate/