HSBC has sent some staff in London home after a worker tested positive for coronavirus, the first known case in Europe’s main financial hub, while Italy’s UniCredit was forced to do the same after two fresh infections.

An employee in HSBC’s research department in London told the bank at the weekend that he had tested positive for coronavirus, three people familiar with the matter told Reuters.

One of the people said HSBC had told its staff who came into contact with him to work from home, as the areas affected, including the research department, undergo a thorough clean.

HSBC’s London office is in the centre of Canary Wharf, a major financial centre that hosts many investment banks, including Citi, JPMorgan, Morgan Stanley and Barclays.

Italy’s UniCredit upped its tally of workers infected with coronavirus to three on Thursday, including one in Germany, as it sent staff who dealt with them home.

In one of the incidents, the bank’s German arm said a contractor working in its Munich office had tested positive for coronavirus and that it had told all employees who had been in contact with the person to self-quarantine for two weeks.

The lender said that another employee based in the northern city of Piacenza had also come down with the disease, making it the third case at Italy’s biggest bank since the outbreak of the illness.

Italy has been the hardest-hit country in Europe, with the total number of deaths rising to 107 and more than 3,000 confirmed cases.