The interesting (and concerning) part is that hantavirus was previously believed not to be transmissible from person to person. But with the recent outbreak, this understanding might have to be updated.
From https://www.nejm.org/doi/full/10.1056/NEJMoa2009040:
"was similar to the causative strain (Epilink/96) in the first known person-to-person transmission of hantavirus pulmonary syndrome caused by ANDV, which occurred in El Bolsón, Argentina, in 1996"
Andes strain is more transmissible but has only been shown to have one super spreader event previously.