Jake Rosmarin tells the BBC what it's like inside the national quarantine unit where he and 14 other passengers are staying in Nebraska.
The woman who was on a virus-hit ship shows "no signs of illness", the government of Pitcairn Islands, a British Overseas Territory, says.
One American passenger who sailed on the MV Hondius is now in a quarantine unit in Omaha, Nebraska.
The people from Saint Helena and Ascension Island are connected to the MV Hondius cruise ship outbreak.
The situation could still change and there might be more confirmed cases, warns the head of the World Health Organization.
Passengers potentially exposed to hantavirus are being repatriated, so what is the risk to the wider public?
Two people are being monitored in Atlanta, 16 in Nebraska and another six passengers in Canada.
An American and a French national who have returned home have tested positive for hantavirus.
After being flown to a medical centre in Nebraska, some Americans will be allowed to "self-isolate" in their home states.
