It seems like the right steps are being taken (so far) to quell this hantavirus outbreak: the @WHO is coordinating across multiple countries, large scale contact tracing is underway, several Canadians are quarantining after returning home, and ill passengers are receiving care.
A Chilean study from ~20 years ago found that 3.4% of household contacts exposed to Andes virus (hantavirus) became infected, with the highest risk among sexual partners.