Samples in a study of more than 2400 people. the fda also said that the company and inspect ir expected to produce around 100 of these instruments each week moving forward. christi and alex. let s go to china where 44 cities are under either a full or partial lockdown because of a surge in covid-19 cases. now in shanghai, there are 25 million residents. that is roughly the same population as australia. and that city has become the epicenter of the new outbreak in china. yesterday shanghai reported 23,000 new covid cases, that is 95% of all new covid infections reported in china. and now a lack of food, access to medical supplies and shifting policies have led to growing frustration in even anger and protests in shanghai. joining me from there is rodrigo