Retail giant Amazon says it will build its own coronavirus testing lab to monitor the health of its staff.
Cases of Covid-19 have been reported at more than 50 Amazon facilities across the US. Some have involved multiple infected workers.
The company said it had assembled a team to build its own “incremental testing capacity”.
Amazon staff have previously criticised the firm over its response to the coronavirus pandemic.
In March, Amazon fired a New York warehouse worker who organised a protest over a lack of safety precautions taken by the company.