Carnival Corp's Princess Cruises and Torstein Hagen-controlled Viking Cruises have suspended operations as the coronavirus epidemic delivers a historic wallop to the industry.

Princes Cruises said Wednesday that it would halt operations for two months after passengers on two of its ships — Diamond Princess and Grand Princess — were quarantined due to virus outbreaks.

Princess Cruises has been hit particularly hard by Covid-19 because the brand with 17 ships has had to deal with essentially two back-to-back ship quarantines.