After cases of corona infection, around 500 employees were quarantined at the aircraft manufacturer Airbus in Hamburg.
This affects not only the direct contact persons of the 21 employees who tested positive for Corona, but the entire shift, said a spokesman for the Hamburg health authority on Sunday.
After the corona cases became known, they have been in quarantine since Friday.
The cause of the cases is still being investigated, said Airbus.
The health authorities can say in the middle of the week at the earliest whether the virus is a highly contagious mutation.
The "Bild" newspaper had previously reported on the outbreak.
With more than 12,000 employees, Hamburg is the largest German Airbus location and, according to company information, the second largest location worldwide.
In Hamburg, all the essential steps in aircraft construction take place at Airbus, from development and construction through production and final assembly to delivery.
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