Hantaviruses are usually carried by rodents, but human transmission of the Andes strain - which the World Health Organization (WHO) believes was contracted by some of the Dutch ship’s passengers while in South America - is possible.

In its statement early on Monday, the US Department of Health and Human Services said all 17 US citizens on Sunday’s flight would undergo “clinical assessment” at a medical facility in Nebraska. A British national living in the US was also repatriated alongside them.

Seven other US passengers had already returned home and were being monitored in their home states.