Hantavirus has been confirmed in the second of the two patients brought to Dutch hospitals after they were evacuated from the cruise ship Hondius, bringing the total number of confirmed infections to six.

The patient, a 56-year-old British man, is being treated at Leiden teaching hospital, from where he told British media he was “doing okay“. Martin Anstee, a retired police officer, was acting as a guide for passengers on board the ship.

A KLM stewardess, who came into contact with one of the victims, is still undergoing tests to see if she too has the virus. RTL reported on Thursday that 60 people who were on board the KLM flight from Johannesburg to Amsterdam have been identified.

They may have come into contact with the 69-year-old woman who was removed from the flight because she was too ill to travel. She has since died. A spokeswoman for Kennemerland regional health board said fewer than 10 people on the flight had intensive contact with the woman, and they are all people who had helped her because she was unwell.

The stewardess who has since developed mild symptoms was taken to Amsterdam’s UMC hospital on Wednesday evening.

The MV Hondius cruise ship is on its way to Spain, where it is due to arrive on Saturday. Two Dutch doctors and a WHO expert are now on board the ship. None of the remaining passengers or crew are symptomatic, WHO chief Tedros  Ghebreyesus said at a news conference on Thursday afternoon.