There are very rare but occasional outbreaks in places where mice and rats breed uncontrolled. Public parks mostly in Arizona, California, Colorado and New Mexico where the rental cabins are not occupied for part of the season. The rodents take over the cabins and then humans show up and get infected. Hantavirus is very rare. There have been less than a few hundred cases in the last few decades. There is a rare strain of Hanta in South America has has a 40-50% fatality rate but in most strains the fatality rate is 20% to 40%. It is also very rare in South America and Africa.
If that ship has been overtaken by rodents infected with Hanta then quarantine the ship, eliminate the rodents and sanitize the ship. Or capture all the mice and release them into the underground missile cities.
There is, however, one far more dangerous form.. called Andes Virus[1] (notice where the ship started its journey) Andes-hanta can be spread person-to-person. Dangerous in close-quarters, probably a bad region to start a cruise from.
I believe so, yes. AFAIK it is only transmissible via the airborne vector from rodents to humans. Human to human requires physical contact based on my limited reading on the topic.
As for Russia, hardly at war with them either. Trump is Putin's bitch.
So basically what the fuck are you talking about?
If you would like some deeper discussion on the topic there is a halfway decent talk from Professor Jiang on DOAC. [1] He had many of the same predictions I had mentioned here on HN some time back which nobody here agreed with and they have all come true. We are just getting started in this quagmire.
Don't let Fox news mislead people into thinking that air strikes will do anything to end this.
[1] - https://www.youtube.com/watch?v=BTJGr78-zyw [video][2 hours, 11 minutes]