The development has suspended other activities, including rail traffic, as investigations continue.
German authorities on Tuesday said that the number of registered cases of child sexual abuse in Germany had risen significantly over the past five years.
The WHO noted that the latest patient was discharged on July 16 after testing negative twice.
German intelligence services believe Russian actors are hiring people to carry out espionage and sabotage operations across the country.
Mr Umeadi faces 20 years in prison, a fine of up to $250,000, and a term of supervised release of up to three years. His sentencing was scheduled for later in July.
She said yearly, Germany is short of at least 400,000 skilled workers.
‘‘We learned about his case via newspaper articles.’’
