Josephine Ma reports the latest on vaccine testing in mainland China, the deep ethical concerns over 'human challenge' trials and the reality of political promises of a vaccine to be ready by September; Simone McCarthy reports on how trade deals and Big Pharma threaten equitable global distribution, with analysis by public health specialist Dr Deborah Gleeson from LaTrobe University about global concerns on pricing, IP laws and corporate values versus the global good. Presented by Kinling Lo.