I'm anxious you decided to take the out-of-context headline of an article you didn't read and run with it:

“They were not thinking that these symptoms were compatible with hantavirus. Why? Because what she was telling [them] was [that she had] an episode of coughing some days ago that had disappeared, and what she was having at that moment was kind of like stress or anxiety or nervousness. So it was not catalogued [as hantavirus],” [Spanish health minister] Padilla said.

[Padilla] said the woman, who had been travelling on the ship at the centre of a deadly hantavirus outbreak, had been suffering flu-like symptoms but they appeared to be getting better and she did not have a fever.

He said that the woman’s condition had deteriorated between the ship and the plane. “It is not that the patient was feeling bad and she was saying: ‘OK, I’m not going to say anything because I want to be on the plane.’ It was like: ‘OK, we have measured your temperature, it was not fever, afterwards you have been on the plane, it has taken off, you have started feeling bad, we have measured your temperature and it was fever.’”

Padilla said passengers could not have been tested onboard the vessel because there were no rapid PCR tests for hantavirus available. Any testing would have involved flying samples to Madrid to a specialist lab, a process that would have taken 24 hours. Those delays would have made it impossible to rescue those on board due to a forecast of extremely high winds from Monday evening, which were due to be “hell” on Tuesday, he said.