Polish health authorities have placed a Polish citizen under epidemiological surveillance after he may have come into contact with a passenger on the MV Hondius cruise ship, which experienced an outbreak of the deadly hantavirus. This was announced by Poland's Chief Health Inspector Pawel Grześowski.

According to Grzesowski, the individual in question is not currently in Poland and has no symptoms of the disease. His gender and country of residence are not being disclosed. His condition will be monitored for six weeks—the maximum incubation period for the virus. Health authorities have also begun checking for other individuals who may have come into contact with the ship's passengers after they disembarked.

It was previously reported that a hantavirus outbreak occurred on the MV Hondius cruise ship, en route from Argentina to Cape Verde. Three people died from the infection—a Dutch couple and a German citizen. There were approximately 150 tourists from various countries on board. Five Ukrainian citizens are known to be among the crew; they show no signs of deteriorating health.

On the morning of May 10, the cruise ship arrived at port on the Spanish island of Tenerife (Canary Islands). Spanish medical personnel immediately boarded for final sanitary checks. Spaniards will be evacuated to the hospital and placed in quarantine, while citizens of other countries will be repatriated on special flights. As of Sunday evening, 94 passengers of 19 nationalities had been evacuated from the ship.