The title of this article notwithstanding, it provides an update on several areas where cruises are currently operating or are expected to resume soon.
This is an interesting statistic (though I have no idea how reliable it is):
"According to an independent consulting firm, Bermello Ajamii & Partners, just 23 COVID-19 cases have been confirmed on ships since the industry began its tentative relaunch last summer, for a passenger infection rate of 0.006%."
Elsewhere, the article says 350,000 people have cruised since July 2020; that's the universe from which 23 cases were reported.
For those who might consider cruising from Italy, this may also be important: "Passengers from outside Italy must arrive with negative COVID-19 tests taken within 48 hours of their departures and only residents of Europe's Schengen countries plus Romania, Croatia and Bulgaria are permitted to book under COVID-19 insurance policies." I think that means Americans and Canadians are not currently welcome, but it's also possible it just means they wouldn't be able to purchase (Italy-based??) travel insurance with COVID-19 protection.